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Demersal fish. Bluespotted ribbontail ray resting on the seafloor. Rhinogobius flumineus swim on the beds of rivers. Demersal fish, also known as groundfish, live and feed on or near the bottom of seas or lakes (the demersal zone). [ 1 ] They occupy the sea floors and lake beds, which usually consist of mud, sand, gravel or rocks. [ 1 ]
A bottom feeder is an aquatic animal that feeds on or near the bottom of a body of water. [1] Biologists often use the terms benthos —particularly for invertebrates such as shellfish, crabs, crayfish, sea anemones, starfish, snails, bristleworms and sea cucumbers —and benthivore or benthivorous, for fish and invertebrates that feed on ...
A common rig for bottom fishing is a weighted tackle called sinker, which is tied to the end of the fishing line, and a baited hook about an inch up line from the weight. . Sometimes the sinker can be replaced by a cage- or keg-like feeder which contains and releases groundbait to better attract
Sturgeon. Sturgeon (from Old English styrġa ultimately from Proto-Indo-European * str̥ (Hx)yón - [1]) is the common name for the 28 species of fish belonging to the family Acipenseridae. The earliest sturgeon fossils date to the Late Cretaceous, and are descended from other, earlier acipenseriform fish, which date back to the Early Jurassic ...
The brown bullhead (Ameiurus nebulosus) is a fish of the family Ictaluridae that is widely distributed in North America. It is a species of bullhead catfish and is similar to the black bullhead (Ameiurus melas) and yellow bullhead (Ameiurus natalis). It was originally described as Pimelodus nebulosus by Charles Alexandre Lesueur in 1819, and is ...
Lake sturgeon. The lake sturgeon (Acipenser fulvescens), also known as the rock sturgeon, [7] is a North American temperate freshwater fish, one of about 25 species of sturgeon. Like other sturgeons, this species is a bottom feeder and has a partly cartilaginous skeleton, an overall streamlined shape, and skin bearing rows of bony plates on the ...
Zebra danios are another species that thrive in schools, with Aqueon advising that owners keep them in groups of six or more. Keep in mind that these active fish are known to jump out of the water ...
The term benthos, coined by Haeckel in 1891, [3] comes from the Greek noun βένθος 'depth of the sea'. [1][4] Benthos is used in freshwater biology to refer to organisms at the bottom of freshwater bodies of water, such as lakes, rivers, and streams. [5] There is also a redundant synonym, Benton. [6]