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As of May 2016, the official all tackle world record recognised by the International Game Fish Association (IGFA) stands at 2.9 kg (6 lb 6 oz) for a Finnish fish caught September 4, 2010. [9] In January 2010 a perch with a weight of 3.75 kg (8 lb 4 oz) was caught in the river Meuse , Netherlands. [ 10 ]
Actinopterygii (/ ˌ æ k t ɪ n ɒ p t ə ˈ r ɪ dʒ i aɪ /; from Ancient Greek ἀκτίς (aktis) 'having rays' and πτέρυξ (ptérux) 'wing, fins'), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish [2] that comprise over 50% of living vertebrate species. [3]
The dorsal fin contains 12–13 spines and a similar number of soft rays while the anal fin has 3 spines and 12–13 soft rays, the second spine is slightly thicker and longer than the third. The entire body is covered in scales apart from the tip of the snout, lips and chin. [ 3 ]
All three are popular big-game sport fish, [3] and additionally they are hunted commercially for their meat, livers (for shark liver oil), skin (for shagreen) and fins (for use in delicacies such as shark-fin soup). Despite being active predatory fish, thresher sharks do not appear to be a threat to humans. [4]
Acanthopterygii (meaning "spiny-finned one") is a superorder of bony fishes in the class Actinopterygii.Members of this superorder are sometimes called ray-finned fishes for the characteristic sharp, bony rays in their fins; however this name is often given to the class Actinopterygii as a whole.
These elongated, predatory fish are distinguished by their long dorsal fins, large mouths, and shiny teeth. They breathe air with gills, which allows them to migrate short distances over land. They have suprabranchial organs, which are primitive forms of labyrinth organs, that develop when they grow older. [1]
Eusthenopteron (from Greek: εὖσθένος eûsthénos 'stout', and Greek: πτερόν pteron 'wing' or 'fin') [2] [1] is an extinct genus of prehistoric marine lobe-finned fish known from several species that lived during the Late Devonian period, about 385 million years ago.
Juveniles of the Chinese high-fin banded sharks are also characterized by high and triangular dorsal finnage that extends up to the rear of the anal fin. The adult appearance is far less distinctive, as they are elongated in shape without the very high dorsal fin. [11] The thick and fleshy [5] lips bear small papillae without barbels.