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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 ...
These fishes exhibit a number of adaptations for feeding on large prey. The "open" structure of its jaws allows the fish to swing its entire head forward to grab prey from afar in addition to reducing water resistance, allowing them to be snapped shut more quickly, while large recurved teeth and powerful jaw muscles assure a secure hold.
The common name of these fish is related to their bizarre, tubular eyes. The genus name Gigantura refers to the Gigantes , a race of giants in Greek mythology —coupled with the suffix oura , meaning 'tail', thus Gigantura refers to the greatly elongated, ribbon-like lower half of the tailfin that may comprise over half of the total body length.
[3] [4] Each filament contains a capillary network that provides a large surface area for exchanging oxygen and carbon dioxide. Fish exchange gases by pulling oxygen-rich water through their mouths and pumping it over their gills. In some fish, capillary blood flows in the opposite direction to the water, causing countercurrent exchange. The ...
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.
Some semi-aquatic mammals have adaptations for visions (larger eyes, tapetum) that allow them to see and potentially communicate using visual signals even in low light conditions. [14] In some fish, mantis shrimp and squid, their eyes have a specific photoreceptor structure/orientation that is thought to give them the ability to detect ...
Specifically, the study examined the edible tissue of fish often fished along the Oregon coast or sold in the state's markets: black rockfish, lingcod, Chinook salmon, Pacific herring, Pacific ...
Lanternfish are well known for their diel vertical migrations: during daylight hours, most species remain within the gloomy bathypelagic zone, between 300 and 1,500 m (980 and 4,920 ft) deep, but towards sundown, the fish begin to rise into the epipelagic zone, between 10 and 100 m (33 and 328 ft) deep.