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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]
Demersal fish can be divided into two main types: strictly benthic fish which can rest on the sea floor, and benthopelagic fish which can float in the water column just above the sea floor. Benthopelagic fish have neutral buoyancy , so they can float at depth without much effort, while strictly benthic fish are denser, with negative buoyancy so ...
Pelagic fish. Pelagic fish live in the pelagic zone of ocean or lake waters—being neither close to the bottom nor near the shore—in contrast with demersal fish that live on or near the bottom, and reef fish that are associated with coral reefs. [ 1 ] The marine pelagic environment is the largest aquatic habitat on Earth, occupying 1,370 ...
The banded rudderfish is a benthopelagic fish which is found at depths of 3–360 metres (9.8–1,181.1 ft). [2] It is found over hard substrates in both inshore and offshore waters but it normally inhabits shallower water than its congeners. The juveniles are found in association with floating mats of weed or debris, and have been known to ...
Benthic-pelagic coupling are processes that connect the benthic zone and the pelagic zone through the exchange of energy, mass, or nutrients. These processes play a prominent role in both freshwater and marine ecosystems and are influenced by a number of chemical, biological, and physical forces that are crucial to functions from nutrient cycling to energy transfer in food webs.
The common dentex (Dentex dentex) is a species of marine ray-finned fish belonging to the family Sparidae, which includes the seabreams and porgies. This species is found in the northeastern Atlantic Ocean and the Mediterranean Sea. It is a highly valued food fish and is an important target species for fisheries and the population has shown ...
The giant trevally is the largest member of the genus Caranx, and the fifth-largest member of the family Carangidae (exceeded by the yellowtail amberjack, greater amberjack, leerfish, and rainbow runner), with a recorded maximum length of 170 cm (67 in) and a weight of 80 kg (180 lb). [6] Specimens of 50 kg and above are not uncommon in ...
Habitat and biology. The green jobfish is a benthopelagic fish of open waters of deep lagoons, channels, or seaward reefs at depths from the surface down to 120 m (390 ft). It is typically encountered singly but they may aggregate into small schools. It diet is dominated by fishes but it is also known to feed on crustaceans, cephalopods and ...