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[8] [27] Coelacanths are large, plump, lobe-finned fish that can grow to more than 2 m (6.6 ft) and weigh around 90 kg (200 lb). [28] They are estimated to live up to 100 years, based on analysis of annual growth marks on scales, and reach maturity around the age of 55; [ 29 ] the oldest known specimen was 84 years old at the time of its ...
As of September 2016, the International Union for Conservation of Nature (IUCN) lists 65 extinct fish species, 87 possibly extinct fish species, and six extinct in the wild fish species. [ 1 ] [ 2 ] Cartilaginous fish
The Black kokanee or Kunimasu, once thought to be extinct, is now classed as extinct in the wild. This list of freshwater fish recorded in Japan is primarily based on the IUCN Red List, which, for fish found in inland waters, details the conservation status of some two hundred and sixty-one species, seventy-three of them endemic. [1]
Researchers have rediscovered a rare fish species presumed to be extinct after it was not seen for more than eight decades. The last sighting of the Chel snakehead, or Channa amphibeus, was last ...
Two coelacanths were initially reported captured off Songo Mnara, a small island off the edge of the Indian Ocean in August 2003. A spate of 19 more specimens of these extremely rare fishes weighing between 25 and 80 kg were reported netted in the space of the next five months, with another specimen captured in January 2005.
A few living forms, such as the coelacanth are also referred to as prehistoric fish, or even living fossils, due to their current rarity and similarity to extinct forms. Fish which have become recently extinct are not usually referred to as prehistoric fish. Lists of various prehistoric fishes include: List of prehistoric jawless fish; List of ...
The dugong (dugong dugon) VU VU at a global level on the IUCN Red List, CR on the Japanese Red List; [2] those found in the waters around northern Okinawa Island comprise the northernmost population globally [9] and are protected as a Natural Monument under the 1950 Law for the Protection of Cultural Properties [10]
The Kunimasu species was originally endemic to a single location, Lake Tazawa in Akita Prefecture, Japan. [2] In 1935, eyed eggs (a fertilized stage of eggs) of this fish species were introduced into several other lakes in Japan, including Lake Saiko, Yamanashi Prefecture, in an attempt at translocation that was thought to have been unsuccessful. [2]