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Method of controlling fish behaviour

IPC classes for russian patent Method of controlling fish behaviour (RU 2352111):

A01K79 - Methods or means of catching fish in bulk not provided for in groups ; A01K0069000000-A01K0077000000

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FIELD: agriculture.

SUBSTANCE: present invention relates to acoustic methods of stimulating motion behaviour of fish and can be used in industrial fishery and fish-breeding for attracting and concentrating fish in the area around fishing equipment with subsequent catching or for protection purposes for keeping fish in sections of a water body, favourable for growing and spawning until the of the growing and spawning period. The method of controlling fish behaviour involves generation and emission of information hydroacoustic signals in an aqueous medium, transmission of the signals to the fish and changing their behavioural characteristics. The information signals used are hydroacoustic signals with given spectral-energy and time parameters of sounds of physostomous fish in the 20-3000 Hz frequency range with sound pressure level of up to 10 Pa/1 m, depending on the species composition of the fish on which the signals are directed. Hydroacoustic information signals with given parameters act on the behaviour of fish on an unconditional-reflex level and arouses their adequate reaction to move to the sound source.

EFFECT: efficient and prolonged control of fish behaviour.

6 cl, 2 dwg, 6 ex

The invention relates to the field of hydro-acoustics, in particular to acoustic methods of motor activity of the fish, and can be used in fishing and fish farming to attract and concentrate fish in the zone of the gears or for fish protection to keep fish is conducive to feeding and spawning areas water areas.

Of the ways of attracting fish using a variety of known sound of acoustic techniques in fisheries, has long been used by fishermen in different countries and is based on the use to attract fish phonetic similarities of sounds of some commercial fish species, manifested in the process of their activity (for example, when feeding, movement, reproduction), and sounds generated in the water by means of various mechanical devices (Protasov V.R. Behavior of fish. M: Food industry, 1978, s-234).

The disadvantage of these methods to control the behavior of fish is the low efficiency of the process of attraction and concentration of fish due to poor quality simulated signals as the similarity with biological signals is usually only temporary (rhythmic) structure of the signal and spectral and energy characteristics of biosignal significantly distorted.

In addition, the known methods have the local use and relate to the particular species of fish in a certain physiological state.

There is a method in which fish (e.g. herring) are affected by acoustic signals in a particular range of sound 1.5 seconds, the frequency of which is continuously variable in the range from 700 to 850 Hz. When the alarm sounds twice, there is an increase in the intensity of up to ±60-80 ated and the decrease in signal intensity to the magnitude of the natural background with a smooth change in the level of the current signal after the second peak (RF patent №2182765, CL AC 79/00, 2002).

A narrow range of frequencies emitted according to this method signals, impoverishes their content and, accordingly, reduces the impact on fish, because it is known that the biological signals of the fish have a much wider range of frequencies (Protasov V.R. Behavior of fish. M: Food industry, 1978, p.78).

In addition, the possibility of attracting other species of fish signals of known content, because the signals that positively affect some fish may be completely useless for attracting other species or even to scare off these fish. Given that the emitted acoustic signals do not provide the similarity with biological signals of fish (there is only a tone modulated sound), such signals can hardly be attributed to information that involves fast and aptroot fish to these incentives.

The closest in technical essence to the invention is a method (selected as the prototype method) control the behavior of fish, based on the formation and radiation in the aquatic environment the information hydroacoustic signals simulating broadband sounds of eating fish, the impact of these signals on fish and change their behavioral characteristics of fish movements to the sound source (Solovova L.A., Ervik A. Research to attract trout to the sound source. // The fishing industry. M., 1981, No. 7, p.44-45).

The known method is quite effective because it knows that the response of fish to biological (information) signals more stable, focused and selective than the sounds technical origin (Protasov V.R. Behavior of fish. M: Food industry, 1978, s.226).

However, this method has significant drawbacks, namely:

- does not provide a sufficient effect of process control the behavior of fish due to the unstable response of fish to signals known information content at different physiological status of fish and relatively quick adaptation to the emitted sounds without reinforcements.

On the origin of the fish signals are divided into two groups: radiated by means of special organs (signals 1-th order) and occur spontaneously in the course on edenesque reactions (signals 2-th order), but having to fish a certain biological significance (Protasov V.R. Behavior of fish. M: Food industry, 1978, p.134-135). Power sounds and movements of fishes belong to the signals of the 2nd order ("mechanical" sounds). During repeated playback of these sounds without reinforcement reaction movement on the source weakens and causes adaptation. In addition, the effectiveness of incentives, imitating the sounds of power or movement of fish, depends primarily on the physiological state of the object, the rhythms of his food, movement, spawning activity. For example, hungry fish react positively to the sound of power, full - indifferent (Protasov V.R. Behavior of fish. M: Food industry, 1978, s).

On the other hand: the main objects of the coastal fishing - salmon and herring in the pre-spawning period of life (i.e. in the period of their mass harvesting in the far Eastern basin) almost do not eat, so the sounds of feeding or movement of food items to attract these fish will have a very low effect.

The objective of the invention is to improve the efficiency and sound effects on the behavior of fish and the elimination of their quick adaptation to the emitted signals for effective and lasting control the behavior of fish in the process of fishing.

The problem is solved in that in the known STRs which both control the behavior of fish, consisting in the formation and radiation in the aquatic environment the information hydroacoustic signals, as information signals using hydroacoustic signals with predetermined spectral energy timing parameters of the sounds atkritumu fish in the frequency range 20-3000 Hz sound pressure level up to 20 PA/1 m, the frequency of their repetition within days, the characteristics of the auditory sensitivity of fish, depending on species composition of fish, which is aimed effect.

Moreover, as information signals using hydroacoustic signals with predetermined spectral energy temporal parameters, namely as information signals for chum and other salmon species are greater than 50 cm using a pulsed acoustic signals with a duration of 1.0±0.7 s in the frequency range 20-1000 Hz, with two maximums of spectral energy in the frequency sub-bands 100-200 Hz and 450-700 Hz, frequency modulation of the spectral maximum from the beginning to the end of the pulse within the selected intervals of the spectrum, the sound pressure level at the dominant frequencies in the location of fish-object impact 108±4 dB relative to 2·10^-5PA and amplitude modulation frequency 6-14 Hz depth of 4-6 dB with a gradual rise and exponential decay of the amplitude in the pulse.

The quality is TBE information signals for salmon and other salmon species is less than 50 cm using a pulsed acoustic signals with a duration of 0.5±0.2 s in the frequency range 20-1000 Hz, having two maximums of spectral energy in the frequency sub-bands 250-350 Hz and 600-900 Hz, frequency modulation of the spectral maximum from the beginning to the end of the pulse within the selected intervals of the spectrum, the sound pressure level at the dominant frequencies in the location of fish-object impact 102±2 dB relative to 2·10^-5PA and amplitude modulation frequency 24-40 Hz depth of 4-6 dB with a gradual rise and exponential decay of the amplitude in the pulse.

As information signals for herring using pulsed acoustic signals with a duration of 0.8±0.3 s in the frequency range 50-2000 Hz, with two maximums of spectral energy in the frequency sub-bands 350-500 Hz and 800-1200 Hz, frequency modulation of the spectral maximum from the beginning to the end of the pulse within the selected intervals of the spectrum, the sound pressure level at the dominant frequencies in the location of herring 94±3 dB relative to 2·10^-5PA and amplitude modulation frequency 35-55 Hz depth of 4-6 dB with a gradual rise and exponential decay of the amplitude in the pulse.

As information signals for use sardines pulsed acoustic signals with a duration of 0.8±0.5 s in the frequency range 50-2000 Hz, with two maximums of spectral energy in the frequency sub-bands 400-550 Hz and 1000 to 1400 Hz, the frequency modulation range of the high peak from the beginning to the end of the pulse within the selected intervals of the spectrum, the sound pressure level at the dominant frequencies in the location of sardines 92±3 dB relative to 2·10^-5PA and amplitude modulation, pulse frequency 45-55 Hz, the depth of 4-6 dB with a gradual rise and exponential decay of the amplitude in the pulse.

As information signals for smelt, capelin, anchovy, sprat and other small atkritumu fish using sonar pulse signals with a duration of 1.0±0.5 s in the frequency range 50-2500 Hz, with two maximums of spectral energy in the frequency sub-bands 550-700 Hz and 1800-2400 Hz, frequency modulation of the spectral maximum from the beginning to the end of the pulse within the selected intervals of the spectrum, the sound pressure level at the dominant frequencies in the location of fish 88±4 dB relative to 2·10^-5PA and amplitude modulation, frequency 50-60 Hz, depth of 4-6 dB with a gradual rise and exponential decay of the amplitude in the pulse.

In the inventive method of controlling the behavior of fish total significant signs for him and prototype are:

- formation of information hydroacoustic signals and radiation in the aquatic environment;

- the impact of information hydroacoustic signals on fish;

- change the behavioral characteristics of fish.

Comparative analysis of the essential features of the proposed method is driven by the I the behavior of fish and prototype shows the first unlike the prototype has the following salient features:

1. As information signals are used most frequently recurring sounds atkritumu fish, their emitted at all stages of development and are essential for intraspecific acoustic signaling and communication between individuals in a flock and between flocks of the same species of fish.

2. Spectral-energy and timing information signals form a view of the generalized spectral-energy and temporal parameters of sounds atkritumu fish, their frequency during the day and the characteristics of the auditory sensitivity of fish.

3. Spectral-energy and timing information signals with the declared parameters and choose show depending on the species (dimensional) structure of the objects to whom the action.

Analysis of the known technical solutions to detect in these distinctive characteristics have shown the following.

Signs 1-3 are new and unknown to their use to control the behavior of fish.

It is also unknown the use of signals with the declared parameters to control the behavior of fish.

Thus, the presence of new significant features, in conjunction with the known, provides the appearance of the claimed solved the I of the new property does not match the properties of the known technical solutions for a long period of time to effectively manage the behavior of fish of a certain size and species through the formation and emission information hydroacoustic signals with spectral energy and the timing of those sounds atkritumu fish, which directed the action.

In this case, we have a new set of essential features and their causal relationship with the achieved technical result consists in increasing the information content of the signals and the stability of attracting fish, regardless of their physiological condition and stage of fish development. And exceptions rapid adaptation to the emitted signals and providing opportunities for attracting fish of a certain type and size.

And it is not easy integration of new features and is already known in underwater acoustics, namely the formation and radiation in the aquatic environment signals with the proposed parameters and leads to qualitatively new effects. Thanks to the new essential features of the claimed invention, it became possible to solve the problem.

As shown by the authors of the study, Stein Otkrytiye fish (herring, salmon) are highly bioacoustic what aktivnosti. Found that the acoustic activity of these species is determined mainly by the sounds produced by bleed air from the bladder through the bladder and special sphincter formations. Signals that accompany this process, are present in almost all stages of development atkritumu fish and repeated regardless of the physiological state of the fish, the rhythms of their food, motor or spawning activity. The authors determined the spectral composition of the signals, temporal structure, and energy characteristics of the emitted sounds of fish.

Figure 1 shows the generalized spectral energy of the signal characteristics of some commercial atkritumu fish. As can be seen from figure 1, the generalized spectra of signals atkritumu fish have similar shape and are concentrated in two specific sub-bands (intervals) frequency with the maximum energy of the spectrum, respectively, of each species of fish. Basic energy signals during radiation is redistributed in these sub-bands from the beginning to the end of the signal. The presence of two maxima of the spectral density in the generalized spectrum is connected with the peculiarities of vukobratovi at atkritumu fish with swim bladder and sphincter muscle. The dependence of the spectral composition of the signals from the time the ' () sounding object (the shift of spectral energy in the region of higher frequencies and lower level signals with a decrease in the size composition of fish). In addition, the identified characteristic of the pulsed structure of signals with exponential decay of the amplitude in the pulse and amplitude modulation signals depending on size (species) of fish and frequency modulation (frequency deviation) in the characteristic zones of the spectrum from the beginning to the end of the signal.

Proposed method of control the behavior of the fish can be implemented using sonar device (electro-acoustic, pneumocystitis and others)that can play in the aqueous medium of a pulsed sound signals of the complex spectrum in the frequency range 20-3000 Hz with a sound pressure level of up to 10 PA/1 m

Figure 2 shows the block diagram of the electro-acoustic apparatus for carrying out the proposed method of control the behavior of fish.

The device in figure 2 contains the path of the radiation 1 and the reception path 2 information hydroacoustic signals. The path of the radiation 1 includes serially connected electronic unit forming an information signal 3, the amplifier 4 and the emitter hydroacoustic information signals 5 immersed in the aquatic environment. The reception path 2 signal contains submerged in water hydrophone 6 and amplifier 7 connected to the electronic processing unit of the information signal 3.

The way to control the behavior of fish is as follows

Before you begin fishing in block 3, tract radiation 1 signals are formed with predetermined spectral energy and temporal parameters of the generalized spectral-energy and temporal features of natural signals atkritumu fish, which is directed impact. In the power amplifier 4 is amplified signals to a specified level, and with the emitter of hydroacoustic signals 5, is lowered into the water, is the radiation information hydroacoustic signals. When radiation in the aquatic environment of broadband sounds via electro-acoustic transducer inevitable distortion formed in the block 3 of the original signal, especially in the most informative for fish low frequencies. Therefore, using the calibrated reception path 2 of the emitted acoustic signal is transmitted through the hydrophone 6 and amplifier 7 to the input of the processing unit of the information signal 3, which compares with the original and appropriately adjusted to reflect the passing characteristics of the sound-emitting tract. In the process of repeated measurements achieve similarity parameters emitted by the device hydroacoustic signals with the declared parameters of information signals.

In the process of fishing for attracting and concentrating the fish will have Amasa outside the fishing gears, using sonar device into the water serves some of the most often repeated beeps atkritumu fish, their emitted at all stages of development and are essential for intraspecific acoustic signaling and communication between individuals in a flock and between schools of fish.

The parameters of the sounds according to the invention is selected depending on the species (dimensional) structure of fish - object fishery.

Emitted from the device hydroacoustic signals that mimic the biological signals of a certain type atkritumu fish - object fishery, impacts on these species to course-reflex level and change their behavioral characteristics of fish movements to the sound source.

The frequency on the device and radiation of sound in the process of fishing is chosen in each case depending on the design of the gear, its size, spatial distribution and reaction of the object on the audio signals. To expand control the behavior of fish, you can apply multiple spatially distinct sound sources. The level of sound pressure signal in the location of the fish, which is defined using sonar, must be specified according to the invention. Therefore, the closer the fish to the source, the radiated information signals gradually with iaut so, to the signal level at the location of the fish was approximately constant, or move (tow) of the gear itself emitter signals.

During the experiments, it was proven highly effective acoustic stimulation signals with the proposed parameters on the behavior of fish. As object of research was used pre-spawning salmon (chum and pink salmon) and feeding of Pacific herring.

As a result of experimental research found the following:

- presentation signals with the specified parameters is increased acoustic and motor activity of the fish in cages and is accompanied by the movement of fish to the sound source at distances up to 100 m (significance level less than 0.05);

- fish reactions to acoustic stimuli strictly selective and correspond to the information content of signals;

- comparative evaluation of motor responses of fish in the open water body showed the ability of fish to localize signals and having a directional response, accompanied by attracting fish with the main migration routes to the source of the sound;

signals with the declared parameters cause the studied fishes adequate motor response in any physiological state and are unconditional stimuli, triggering a genetic program behavior (the signal of the 1-th order).

The data obtained confirmed the possibility of using the developed method for solving the problem of remote control the behavior of fish on the fisheries and fish farming.

Example 1. Impact on the behavior of pre-spawning pink salmon with the aim of attracting and concentrating in the area of the fish traps and the intensification of fishing. In the aquatic environment emit sonar signals with predetermined spectral energy and time settings with the signal (information) value for salmon, as a means of acoustic signaling and communication in this species and other species of salmon are less than 50 cm

As sound stimuli for pink salmon use of pulsed acoustic signals with a duration of 0.5±0.2 s in the frequency range 20-1000 Hz, with two maximums of spectral energy in sub-bands (intervals) frequency 250-350 Hz and 600-900 Hz, frequency modulation (frequency deviation of spectral maximum of 100 Hz and 300 Hz in the corresponding sub-bands of the spectrum from the beginning to the end of the pulse randomly: either from the bottom of the sub-band to the top, or Vice versa, or from the middle frequency sub-bands in the direction of increasing (decreasing) within the allocated sub-bands, the sound pressure level at the dominant frequencies in the location of fish the object of influence 102±2 dB relative to 2·10^-5 PA and amplitude modulation (ripple) frequency 24-40 Hz, the depth of 4-6 dB with a gradual rise and exponential decay of the amplitude in the pulse.

Radiated hydroacoustic signals on your content are for salmon and other salmon species are smaller than 50 cm unconditional stimuli, positive effect on fish and cause stereotyped manifested propulsion reaction of fish to the source of the sound, regardless of their physiological condition. This allows for a long period of time to effectively manage the behavior of pink salmon by its attraction and artificial concentration in the zone of the coastal trap nets, fixed nets and drift nets and other fishing gear.

Example 2. Impact on the behavior of pre-spawning chum salmon with the aim of attracting and concentrating in the area of the fish traps and the intensification of fishing.

In the aquatic environment emit sonar signals with preset according to the invention the spectral energy and the timing with the signal (information) value for a given species of fish, as a means of acoustic signaling and communication chum and other salmon species more than 50 cm

As sound stimuli for chum salmon use of pulsed acoustic signals with a duration of 1.0±0.7 s in the frequency range 20-1000 Hz, having the e two maximums of spectral energy in sub-bands (intervals) frequency of 100-200 Hz and 450-700 Hz, frequency modulation (deviation) frequency 100 Hz and 250 Hz in the corresponding sub-bands of the spectrum from the beginning to the end of the pulse randomly: either from the bottom of the sub-band to the top, or Vice versa, or from the middle frequency sub-bands in the direction of increasing (decreasing) within the allocated sub-bands, the sound pressure level at the dominant frequencies in the location of fish-object impact 108±4 dB relative to 2·10^-5PA and amplitude modulation (ripple) frequency 6-14 Hz, the depth of 4-6 dB with a gradual rise and exponential decay of the amplitude in the pulse.

Radiated hydroacoustic signals on your content are for chum and other salmon species larger than 50 cm unconditional stimuli, positive effect on fish and cause stereotyped manifested propulsion reaction of fish to the source of the sound, regardless of their physiological condition. This allows for a long period of time to effectively control the behavior of chum salmon by its attraction and artificial concentration in the zone of the coastal trap nets, fixed nets and drift nets and other fishing gear.

Example 3. The impact on the feeding behavior of herring with the aim of attracting and concentrating in the area of the gear and the intensification of fishing.

In the aquatic environment emit gedroyc the socialist signals with preset according to the invention the spectral energy and temporal parameters, with a signal (information) value for flocks of herring, as a means of acoustic signaling and communication in this species of fish.

As sound stimuli for herring using pulsed acoustic signals with a duration of 0.8±0.3 s in the frequency range 50-2000 Hz, with two maximums of spectral energy in sub-bands (intervals) frequency 350-500 Hz and 800-1200 Hz, frequency modulation (deviation) frequency 150 Hz and 400 Hz in the corresponding sub-bands of the spectrum from the beginning to the end of the pulse randomly: either from the bottom of the sub-band to the top, or Vice versa, or from the middle frequency sub-bands in the direction of increasing (decreasing) within the allocated sub-bands, the sound pressure level at the dominant frequencies in the location of herring 94±2 dB relative to 2·10^-5PA and amplitude modulation (ripple) frequency 35-55 Hz, the depth of 4-6 dB with a gradual rise and exponential decay of the amplitude in the pulse.

Radiated hydroacoustic signals affect fish on course-reflex level and cause stereotyped manifested propulsion reaction herring to the source of the sound, regardless of its physiological state. This allows for a long period of time to effectively control the behavior of herring by its attraction and artificial concentration in the enclosure area.</>

Example 4. Impact on the behavior of sardines with the aim of attracting and concentrating in the area of the gear and the intensification of fishing.

In the aquatic environment emit sonar signals with preset according to the invention the spectral energy and the timing with the signal (information) value for swarms of sardines, as a means of acoustic signaling and communication in this species of fish.

As sound stimuli for sardines use of pulsed acoustic signals with a duration of 0.8±0.5 s in the frequency range 50-2000 Hz, with two maximums of spectral energy in sub-bands (intervals) frequency 400-550 Hz and 1000 to 1400 Hz, frequency modulation (deviation) frequency 150 Hz and 400 Hz in the corresponding sub-bands of the spectrum from the beginning to the end of the pulse randomly: either from the bottom of the sub-band to the top, or Vice versa, or from the middle frequency sub-bands in the direction of increasing (decreasing) within the allocated sub-bands, the sound pressure level at the dominant frequencies in the location of fish 92±3 dB relative to 2·10^-5PA and amplitude modulation (ripple) frequency 45-55 Hz, the depth of 4-6 dB with a gradual rise and exponential decay of the amplitude in the pulse.

Radiated hydroacoustic signals affect fish and cause stereotypical-prevlayout the motor reaction sardines to the source of the sound, regardless of its physiological state. This allows for a long period of time to effectively control the behavior of sardines by attracting and artificial concentration in the enclosure area.

Example 5. Effects on behavior smelt, capelin, anchovy, sprat and other small atkritumu fish for their involvement and concentration in the enclosure area and the intensification of fishing.

As the sound of incentives for small atkritumu fish using sonar pulse signals with a duration of 1.0±0.5 s in the frequency range 50-2500 Hz, with two maximums of spectral energy in sub-bands (intervals) frequency 550-700 Hz and 1800-2400 Hz, frequency modulation (deviation) frequency 150 Hz and 600 Hz in the corresponding sub-bands of the spectrum from the beginning to the end of the pulse randomly: either from the bottom of the sub-band to the top, or Vice versa, or from the middle frequency sub-bands in the direction of increasing (decreasing) within the allocated sub-bands, the sound pressure level at the dominant frequencies in the location of fish object impact 88±4 dB relative to 2·10^-5PA and amplitude modulation (ripple) frequency 50-60 Hz, depth of 4-6 dB with a gradual rise and exponential decay of the amplitude in the pulse.

Radiated hydroacoustic signals affect fish and cause stereotyped motor response small otkrytom the x fish to the source of the sound, regardless of their physiological condition. This allows for a long period of time to effectively control the behavior of small atkritumu of fish in the fishery.

Example 6. Impact on the behavior of predatory fish (tuna, salmon, shark and squid with the purpose of attracting and concentrating in the area of the gear and the intensification of fishing.

In the aquatic environment emit sonar signals with preset according to the invention the parameters that mimic the signals of small atkritumu fish, which are objects of power predatory fish and squid and having the information (signal) is in a relationship "predator-prey".

As the sound stimuli used hydroacoustic signals is identical to example 5.

Radiated hydroacoustic signals create a specific acoustic environment, simulating the presence of a small atkritumu fish, increase food reflex marine predatory fishes and invertebrates and have a drawing effect. This enables you to further control the behavior of predatory fishes and squids in the feeding period by attracting and retaining the enclosure area.

The examples show that the developed method can be successfully applied not only to control the behavior atkritumu fish, but also for attracting and concentrations of other predatory fish (tuna, sharks etc), marine invertebrates, Lampedusa and other craft objects.

1. The way to control the behavior of fish, which consists in the formation and radiation in the aquatic environment the information hydroacoustic signals, characterized in that the quality of information signals using hydroacoustic signals with predetermined spectral energy timing parameters of the sounds atkritumu fish in the frequency range 20-3000 Hz sound pressure level up to 20 PA /1 m, the frequency of their repetition within days, the characteristics of the auditory sensitivity of fish, depending on species composition of fish, which is aimed effect.

2. The way to control the behavior of fish according to claim 1, characterized in that the quality of information signals using hydroacoustic signals with predetermined spectral energy temporal parameters, namely as information signals for chum and other salmon species are greater than 50 cm using a pulsed acoustic signals with a duration of 1.0±0.7 s in the frequency range 20-1000 Hz, with two maximums of spectral energy in the frequency sub-bands 100-200 Hz and 450-700 Hz, frequency modulation of the spectral maximum from the beginning to the end of the pulse within the selected intervals of the spectrum, the sound pressure level at the dominant frequencies in the location of fish - object impact 108±4 dB relative to 2·10^-5PA and amplitude modulation h which depends 6-14 Hz depth of 4-6 dB with a gradual rise and exponential decay of the amplitude in the pulse.

3. The way to control the behavior of fish according to claim 1, characterized in that the quality of information signals using hydroacoustic signals with predetermined spectral energy temporal parameters, namely as information signals for salmon and other salmon species is less than 50 cm using a pulsed acoustic signals with a duration of 0.5±0.2 s in the frequency range 20-1000 Hz, with two maximums of spectral energy in the frequency sub-bands 250-350 Hz and 600-900 Hz, frequency modulation of the spectral maximum from the beginning to the end of the pulse within the selected intervals of the spectrum, the sound pressure level at the dominant frequencies in the location of fish - object impact 102±2 dB relative to 2·10^-5PA and amplitude modulation frequency 24-40 Hz depth of 4-6 dB with a gradual rise and exponential decay of the amplitude in the pulse.

4. The way to control the behavior of fish according to claim 1, characterized in that the quality of information signals using hydroacoustic signals with predetermined spectral energy and temporal parameters, namely as information signals for herring using pulsed acoustic signals with a duration of 0.8±0.3 s in the frequency range 50-2000 Hz, with two maximums of spectral energy in the frequency sub-bands 350-500 Hz and 800-1200 Hz, often the strong modulation of the spectral maximum from the beginning to the end of the pulse within the selected intervals of the spectrum, the sound pressure level at the dominant frequencies in the location of herring 94±3 dB relative to 2·10^-5PA and amplitude modulation frequency 35-55 Hz depth of 4-6 dB with a gradual rise and exponential decay of the amplitude in the pulse.

5. The way to control the behavior of fish according to claim 1, characterized in that the quality of information signals using hydroacoustic signals with predetermined spectral energy and temporal parameters, namely as an information signal for use sardines pulsed acoustic signals with a duration of 0.8±0.5 s in the frequency range 50-2000 Hz, with two maximums of spectral energy in the frequency sub-bands 400-550 Hz and 1000 to 1400 Hz, the frequency modulation of the spectral maximum from the beginning to the end of the pulse within the selected intervals of the spectrum, the sound pressure level at the dominant frequencies in the location of sardines 92±3 dB relative to 2·10^-5PA and amplitude modulation, pulse frequency 45-55 Hz depth of 4-6 dB with a gradual rise and exponential decay of the amplitude in the pulse.

6. The way to control the behavior of fish according to claim 1, characterized in that the quality of information signals using hydroacoustic signals with predetermined spectral energy and temporal parameters, namely the quality of information signals is La smelt, capelin, anchovy, sprat and other small atkritumu fish using sonar pulse signals with a duration of 1.0±0.5 s in the frequency range 50-2500 Hz, with two maximums of spectral energy in the frequency sub-bands 550-700 Hz and 1800-2400 Hz, frequency modulation of the spectral maximum from the beginning to the end of the pulse within the selected intervals of the spectrum, the sound pressure level at the dominant frequencies in the location of fish 88±4 dB relative to 2·10^-5PA and amplitude modulation, frequency 50-60 Hz depth of 4-6 dB with a gradual rise and exponential decay of the amplitude of the pulses.