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P. normani exhibits a yellow and blue bicolor, while M. scheeli has a translucent gray body, and P. stigmatopygus has a yellow/gray mix on the body surface. [8] The vibrant colors, large eye, and small size of P. normani make it a popular choice for home aquariums. The species is readily available through aquarium trade and online vendors.
Chrysiptera parasema is a popular fish in the saltwater aquarium hobby. Because of its usually low price it is often recommended as a way for novice marine aquarium keepers to gain experience. [4] Though these hardy fish are sometimes used to cycle a tank, aquariums discourage against this practice, encouraging the use of live rock instead. [5]
The Pseudomugilidae, the blue-eyes, are a subfamily of atheriniform fish in the rainbowfish family Melanotaeniidae. [1] They inhabit fresh and brackish water in Australia, New Guinea and nearby smaller islands. [2] Blue-eyes are small fish, typically no more than 5 cm (2.0 in) in length.
The marginated damsel is noted for blue fins as well as the yellow head and white body. This fish is hardy like most damsels and is also highly aggressive when mature. 6 cm (2.4 in) Neon damsel: Pomacentrus alleni: Yes: 6 cm (2.4 in) Ocellate damsel: Pomacentrus vaiuli: Yes: 9 cm (3.5 in) Pavo damsel: Pomacentrus pavo: Yes [49]: 215 11 cm (4.3 in)
The blue maomao has a laterally, compressed and relatively deep body with a noticeably forked tail. They have protrusible jaws, equipped with a number of rows of small, closely set teeth, which are used to capture larger zooplankton. The adults are deep blue dorsally and pale ventrally, at night they change colour to a mottled dark green.
The Pacific blue-eye generally reaches a total length of around 3–3.5 cm (1 + 1 ⁄ 8 – 1 + 3 ⁄ 8 in) long; males can reach 8.8 cm (3 + 1 ⁄ 2 in) and females 6.3 cm (2 + 1 ⁄ 2 in). [4] The size of Pacific blue-eyes found north of the Burdekin Gap increases directly with distance from the gap, males and females being the same size.
Ctenochaetus strigosus, the kole tang, spotted bristletooth, spotted surgeonfish, goldring bristletooth, goldring surgeonfish, yelloweye tang or yellow-eyed surgeonfish, is a species of marine ray-finned fish belonging to family Acanthuridae which includes the surgeonfishes, unicornfishes and tangs. This fish is endemic to Hawaii.
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]