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Fish anatomy is the study of the form or morphology of fish.It can be contrasted with fish physiology, which is the study of how the component parts of fish function together in the living fish. [1]
Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish swim.Apart from the tail or caudal fin, fish fins have no direct connection with the back bone and are supported only by muscles.
At least five extinct genera, known only from fossils, are classified as osteoglossids; these date back at least as far as the Late Cretaceous.Other fossils from as far back as the Late Jurassic or Early Cretaceous are widely considered to belong to the arowana superorder Osteoglossomorpha.
Ombilinichthys yamini is the oldest known gourami. The family Osphronemidae is divided into the following subfamilies and genera: [3] [4] family Osphronemidae van der Hoeven, 1832
Nemipterus japonicus has its dorsal fin supported by 10 spines and 9 soft rays while the anal fin contains 3 spines and 7 soft rays. [2] Its body has a standard length that is 2.7 to 3.5 times its depth and it has a snout that is equal to in length or longer than the diameter of the eye.
The Asian arowana (Scleropages formosus) comprises several phenotypic varieties of freshwater fish distributed geographically across Southeast Asia. [3] While most consider the different varieties to belong to a single species, [4] [5] [6] [3] [7] work by Pouyaud et al. (2003) [8] differentiates these varieties into multiple species.
A fish (pl.: fish or fishes) is an aquatic, anamniotic, gill-bearing vertebrate animal with swimming fins and a hard skull, but lacking limbs with digits.Fish can be grouped into the more basal jawless fish and the more common jawed fish, the latter including all living cartilaginous and bony fish, as well as the extinct placoderms and acanthodians.
Pterois was described as a genus in 1817 by German naturalist, botanist, biologist, and ornithologist Lorenz Oken.In 1856 the French naturalist Eugène Anselme Sébastien Léon Desmarest designated Scorpaena volitans, which had been named by Bloch in 1787 and which was the same as Linnaeus's 1758 Gasterosteus volitans, as the type species of the genus.