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The spot ( Leiostomus xanthurus ), also known commonly as the spot croaker, [1] Norfolk spot [2] and the Virginia spot, is a species of small short-lived saltwater fish in the family Sciaenidae. The species inhabits estuary and coastal waters from Massachusetts to Texas, and derives its name from the prominent dark spot behind each gill.
Fish reproduction. A pair of bettas spawning under a bubble nest. Fish reproductive organs include testes and ovaries. In most species, gonads are paired organs of similar size, which can be partially or totally fused. [1] There may also be a range of secondary organs that increase reproductive fitness.
Spotted bass. The spotted bass ( Micropterus punctulatus ), also called spotty, or spots in various fishing communities, is a species of North American freshwater fish belonging to the sunfish family ( Centrarchidae) of the order Perciformes. It is noted for the rows of dark spots below the lateral line, which give it its common name.
The Atlantic croaker (Micropogonias undulatus) is a species of marine ray-finned fish belonging to the family Sciaenidae and is closely related to the black drum (Pogonias cromis), the silver perch (Bairdiella chrysoura), the spot croaker (Leiostomus xanthurus), the red drum (Sciaenops ocellatus), the spotted seatrout (Cynoscion nebulosus), and the weakfish (Cynoscion regalis).
A pregnant Southern platyfish. Pregnancy has been traditionally defined as the period of time eggs are incubated in the body after the egg-sperm union. Although the term often refers to placental mammals, it has also been used in the titles of many international, peer-reviewed, scientific articles on fish, e.g. Consistent with this definition, there are several modes of reproduction in fish ...
Fish anatomy. 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] In practice, fish anatomy and fish physiology complement each other, the former dealing with the structure of a fish, its organs or ...
Rhopalium. Moon jelly ( Aurelia aurita) with rhopalia visible in indentations of rim. Rhopalia (singular: rhopalium) from Ancient Greek ῥόπαλον ( rhópalon) 'club' are small sensory structures of certain Scyphozoan (true jellyfish) and Cubozoan (box jellyfish) species.
Spotted eagle ray. The spotted eagle ray ( Aetobatus narinari) is a cartilaginous fish of the eagle ray family, Aetobatidae. As traditionally recognized, it is found globally in tropical regions, including the Atlantic, Pacific and Indian Oceans. Recent authorities have restricted it to the Atlantic (including the Caribbean and Gulf of Mexico ...