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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]
Pethia is a genus of small freshwater fish in the family Cyprinidae native to South Asia, East Asia (only Pethia stoliczkana recorded) and Mainland Southeast Asia. [2] Some species are commonly seen in the aquarium trade.
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The heart is a muscular organ found in humans and other animals.This organ pumps blood through the blood vessels. [1] Heart and blood vessels together make the circulatory system. [2]
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.
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.
A trio of yellowstripe scad displaying their prominent yellow band. The yellowstripe scad is a small species, attaining a maximum length of 22 cm, but is more common at lengths less than 15 cm. [8] The species has a body shape typical of many scads, with a compressed elongate, oblong body with the dorsal and ventral profiles equally curved. [13]
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.