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Close-up of fish melanophores. Fish coloration is produced through specialized cells called chromatophores. The dermal chromatophore is a basic color unit in amphibians, reptiles, and fish which has three cell layers: "the xanthophore (contains carotenoid and pteridine pigments), the iridophore (reflects color structurally), and the melanophore (contains melanin)". [5]
Painted fish are ornamental aquarium fish which have been artificially coloured to appeal to consumers. This artificial colouring, also known as juicing , is achieved by a number of methods, such as injecting the fish with a hypodermic syringe containing bright fluorescent colour dye , dipping the fish into a dye solution, or feeding the fish ...
Most fish species have color vision. There are some species that are capable of seeing ultraviolet while some are sensitive to polarized light. [9] The fish retina has rod cells that provide high visual sensitivity in low light conditions and cone cells that provide higher temporal and spatial resolution than the rod cells are capable of.
The tautog (Tautoga onitis), also known as the blackfish, is a species of wrasse native to the western Atlantic Ocean from Nova Scotia to South Carolina.This species inhabits hard substrate habitats in inshore waters at depths from 1 to 75 m (5 to 245 ft).
Various pictures show slightly different coloring owing to colour changes when they reproduce. [20] The arapaima lays its eggs when water levels are low or beginning to rise. They build a nest about 50 cm (20 in) wide and 15 cm (5.9 in) deep, usually in muddy-bottomed areas.
The haddock (Melanogrammus aeglefinus) is a saltwater ray-finned fish from the family Gadidae, the true cods.It is the only species in the monotypic genus Melanogrammus.It is found in the North Atlantic Ocean and associated seas, where it is an important species for fisheries, especially in northern Europe, where it is marketed fresh, frozen and smoked; smoked varieties include the Finnan ...
Depending on the species, anemonefish are overall yellow, orange, or a reddish or blackish color, and many show white bars or patches. The largest can reach a length of 17 cm ( 6 + 1 ⁄ 2 in), while the smallest barely achieve 7–8 cm ( 2 + 3 ⁄ 4 – 3 + 1 ⁄ 4 in).
It is a marine pelagic fish found around the world in temperate and subtropical waters, except for the northern Pacific Ocean. Bluefish are known as tailor in Australia and New Zealand, [5] elf and shad in South Africa. [6] [7] It is a popular gamefish and food fish. The bluefish is a moderately proportioned fish, with a broad, forked tail.