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Venomous fish do not necessarily cause poisoning if they are eaten, as the digestive system often destroys the venom. [1] There are at least 1200 species of venomous fish, [2] [3] with catfishes alone possibly contributing 250–625 species to that total. [4] The former number accounts for two-thirds of the venomous vertebrate population. [5]
Species of puffer fish (the family Tetraodontidae) are the most poisonous in the world, and the second most poisonous vertebrate after the golden dart frog.The active substance, tetrodotoxin, found in the internal organs and sometimes also the skin, paralyzes the diaphragm muscles of human victims, who can die from suffocation.
The Ohio Department of Natural Resources stated the chemical spill killed an estimated 3,500 small fish across 7.5 mi (12 km) of streams as of February 8. [62] A later estimate put the number of minnows at 38,222, with other species of animals at 5,500, totaling 43,222. [63]
[1] 60% of all evaluated fish species are listed as least concern. The IUCN also lists 37 fish subspecies as least concern. Of the subpopulations of fishes evaluated by the IUCN, 44 species subpopulations have been assessed as least concern. This is a complete list of least concern fish species and subspecies evaluated by the IUCN.
Ohio governor John Kasich called for a temporary moratorium on the sale of exotic animals. [4] Troy Balderson, Zanesville's representative in the Ohio Senate at the time, sponsored a bill requiring a permit and liability insurance for private owners of dangerous wild animals in the next legislative session.
The term "coarse fish" is used in the United Kingdom to describe all fishes besides trout and salmon, but it is not a derogatory term.[2]The Minnesota Department of Natural Resources has made preliminary efforts to replace the term "rough fish" with "underused fish", [3] like some other state agencies have actually done, [4] but this has remained an incomplete effort in Minnesota.
Of all evaluated fish species, 3.6% are listed as near threatened. The IUCN also lists seven fish subspecies as near threatened. Of the subpopulations of fish evaluated by the IUCN, ten species subpopulations have been assessed as near threatened. This is a complete list of near threatened fish species and subspecies evaluated by the IUCN.
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.
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