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They also possess aglomerular kidneys, an adaptation that aids the retention of these antifreeze proteins. [ 16 ] While the majority of animal species have up to 45% of hemoglobin (or other oxygen-binding and oxygen-transporting pigments) in their blood, the notothenioids of the family Channichthyidae do not express any globin proteins in their ...
Foureye butterflyfish usually frequent shallow inshore waters, where they feed on a variety of invertebrates, mainly zoantharians, sea anemones, scleractinians, [6] polychaete worms, gorgonians, tunicates, crustaceans and fish eggs. [7] This fish is known for its uncanny ability to swim in and around coral heads and reefs.
Telescopefish are small, deep-sea aulopiform fish comprising the small family Giganturidae. The two known species are within the genus Gigantura. Though rarely captured, they are found in cold, deep tropical to subtropical waters worldwide. The common name of these fish is related to their bizarre, tubular eyes.
Fish physiology is the scientific study of how the component parts of fish function together in the living fish. [2] It can be contrasted with fish anatomy , which is the study of the form or morphology of fishes.
In early development, the four-eyed fish’s frontal bone expands dorsally allowing the eyes to be positioned on top of their head and appear bulging. [5] This allows the fish to simultaneously see above and below the water as it floats at the surface. The eyes are divided into dorsal and ventral halves, separated by a pigmented strip of tissue.
The blackfin icefish belongs to Notothenioidei, a suborder of fishes that accounts for 90% of the fish fauna on the Antarctic continental shelf. [3] Icefishes, also called white-blooded fishes, are a unique family in that they are the only known vertebrates to lack haemoglobin , making their blood oxygen carrying capacity just 10% that of other ...
Group of the related Chaetodon fasciatus in the Red Sea. Chaetodon lunula can reach a length of 20 cm (nearly 8 in). [2] These large butterflyfishes have an oval outline, with a pattern of ascending oblique reddish stripes on the flanks and black and white bands over the face and eyes, similar to the "raccoon" mask (hence the common name).
Lanternfish are generally small fish, ranging from about 2 to 30 cm (0.79 to 11.81 in) in length, with most being under 15 cm (5.9 in). Shallow-living species are an iridescent blue to green or silver, while deeper-living species are dark brown to black.