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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."
The renyu (人魚; human-fish) is described in the Bei Shan Jing ("Classic of the North Mountains") section as dwelling on Mt. Longhou (龍侯山, "Dragon-Marquis Mountain") in the waters of the Jueshui (決水, "Bursting River"), which flows eastward into the Yellow River. [12]
A piranha or piraña (/ p ɪ ˈ r ɑː n j ə ˌ-r æ n /, or / p ɪ ˈ r ɑː n ə /; Portuguese: [piˈɾɐ̃ɲɐ], Spanish:) is any of a number of freshwater fish species in the family Serrasalmidae, [1] or the subfamily Serrasalminae within the tetra family, Characidae [2] in order Characiformes.
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.
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 ...
In fish, the long bony cover for the gill (the operculum) can be used for pushing water. Some fish pump water using the operculum. Without an operculum, other methods, such as ram ventilation, are required. Some species of sharks use this system. When they swim, water flows into the mouth and across the gills.
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There is a two-way interplay between human attitudes, beliefs, and symbols concerning fish, such as in Christianity, and people's practical use of and dependency on fish: "Fish not only guarantee the necessities of human life as food for the world, but they also establish human and fish relationships that link social, cultural, traditional, and ...