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As water is a much better electrical conductor than air, electrocommunication is only observed in aquatic animals. There are various animals that can detect electrical signals, but fish are the only aquatic animals that can both send and receive EOD, making them the only animals to effectively communicate using electrical signals.
The bishop-fish, a piscine humanoid reported in Poland in the 16th century. Aquatic humanoids appear in legend and fiction. [1] " Water-dwelling people with fully human, fish-tailed or other compound physiques feature in the mythologies and folklore of maritime, lacustrine and riverine societies across the planet."
Human-canine play requires that both the human and dog communicate to understand the situation and goal of the game through their actions. Social bonding is observed in many interspecies interactions such as those between humans and their household pets, humans and primates, and many other animals in the wild. [2] [14] [15] [20] Since social ...
A team led by scientists at Lancaster University in the UK found that the fish are becoming more scared of humans and spending less time on courting behavior, with potentially important impacts on ...
Still, Zangroniz said if a person has pet fish and notices they're floating in the tank or swimming erratically, they can try to remove variables that draw out stress from the fish or seek medical ...
However, this inertia assists the fish in creating propulsion as a result of the momentum created against the water. The forward propulsion created from C-starts, and steady-state swimming in general, is a result of the body of the fish pushing against the water.
In some fish, capillary blood flows in the opposite direction to the water, causing countercurrent exchange. The muscles on the sides of the pharynx push the oxygen-depleted water out the gill openings. In bony fish, the pumping of oxygen-poor water is aided by a bone that surrounds the gills called the operculum. [6]
The body of a fish is denser than water, so fish must compensate for the difference or they will sink. Many bony fishes have an internal organ called a swim bladder, or gas bladder, that adjusts their buoyancy through manipulation of gases. In this way, fish can stay at the current water depth, or ascend or descend without having to waste ...