Dangerous animals of the Black sea
In the Black sea there are just a few of the inhabitants, dangerous to humans. They need to know. You must also know how to avoid them and what to…

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The overflow system for the marine aquarium T-004
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As they say fish? Questions and answers on physics

Who? What? Where? How? Where? When? What?

Why? What? How much? “Yes” or “no”?

MUTE AS A FISH?

Physics note.

Fish extract sounds when the friction of the Gill plates. Carp grind their pharyngeal teeth. Very interested in a sound machine percidae, especially developed at the singing fish and sea cock – trigly. The sounds are produced only with the help of the swim bladder, due to the reduction in the particular drum of the muscles that cause fluctuations in its walls.

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