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Fish fins are distinctive anatomical features with varying structures among different clades: in ray-finned fish (Actinopterygii), fins are mainly composed of bony spines or rays covered by a thin stretch of scaleless skin; in lobe-finned fish (Sarcopterygii) such as coelacanths and lungfish, fins are short rays based around a muscular central ...
The longfin trevally is a predatory fish, known to take a variety of small fishes, cephalopods including squid, and crustaceans such as crabs and mantis shrimp. The species' long gill rakers also help to filter minute organisms from the seawater, adding to the fish's diet. [12] Longfin trevallies reach sexual maturity at 21 to 22 cm in length.
Fish anatomy is the study of the form ... changing to long strips of cartilage above and below in the tail region. ... Although the skulls of fossil lobe-finned fish ...
Longfin dace have 70-95 scales along their lateral line, 7-9 anal fin rays, and 9 dorsal fin rays. An adult longfin dace has a maximum total length of 4 inches (100 mm), although it rarely reaches 3.2 inches (81 mm). [4] Age estimation with scales and length-based grouping suggested that most longfin dace live less than two years. [5]
Like the fish's body, the fins are dark blue on top, but change to a medium yellow color on the underside. They are markedly shorter in fish under 0.5 m (1 ft 8 in) in length, often resulting in confusion with T. obesus juveniles, which also have long pectoral fins, though these are rounded at the tips where the albacore's taper to a point. [4]
Comet, Calloplesiops altivelis Eastern blue devil, Paraplesiops bleekeri In some classifications, the genus Notograptus is split in its own family, Notograptidae, but FishBase is followed here.
The New Zealand longfin eel (Anguilla dieffenbachii) is a species of freshwater eel that is endemic to New Zealand. It is the largest freshwater eel in New Zealand and the only endemic species – the other eels found in New Zealand are the native shortfin eel (Anguilla australis), also found in Australia, and the naturally introduced Australian longfin eel (Anguilla reinhardtii).
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]