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There are two small black spots on top of caudal peduncle and another two at tip of lower jaw which are present in all three colour morphs. The bicoloured pattern shown by the shallow-water morph seems to be an excitement pattern, and it the fish can switch this pattern on and off in a few seconds.
Deep black to tan fish with blue spots throughout. 50 cm (19.7 in) Blue line grouper: Cephalopholis formosa: No: Dark tan with horizontal blue stripes that are not particularly straight. The caudal fin has more of these stripes, and they radiate from the base of the fin out to the tips. 34 cm (13.4 in) Chalk bass: Serranus tortugarum: Yes
This is a medium-sized fish that can reach a length of 60 centimeters (24 in). Small individuals are dark brown with hundreds of small, dark-edged iridescent blue spots. Larger specimens sometimes develop four to six lighter vertical bars on the back half of its body. [3] Cephalopholis argus, Vilamendhoo Maldives
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]
The spot-fin porcupinefish is a medium-sized fish which grows up to 91 cm, but the average size mostly observed is 40 cm. [2] Its body is elongated with a spherical head with big round protruding eyes, and a large mouth which is rarely closed.
The Dolly Varden trout (Salvelinus malma) is a species of salmonid ray-finned fish native to cold-water tributaries of the Pacific Ocean in Asia and North America.Despite the name "trout" (which typically refers to freshwater species from the genera Salmo and Oncorhynchus), it belongs to the genus Salvelinus (chars), which includes 51 recognized species, the most prominent being the brook ...
It can affect both freshwater and marine [1] fish. [2] [3] It appears as tiny black spots on the skin, fins, and flesh of the fish. The life cycle of the parasite typically involves a fish-eating bird, a snail and a fish. [4] The black spot larvae grow to sexual maturity in the infected bird's intestine. The adult worms pass eggs with the bird ...
The overall colour is grey to brown with a pattern of dark spots covering almost all of the body and to the rear of the eyes, the spots fade towards the belly which is unspotted. There are 5 or 6 pale radial bluish stripes which are visible to the front of the lower orbit and there are curved pale blue lines that extend backwards and downwards ...