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It is a predatory fish which has a diet comprising crabs, shrimp, large krill, squid, anchovies, and lanternfish. [4] The ocean whitefish forages by digging into the substrate. [2] The predators of the ocean whitefish include the giant sea bass (Stereolepis gigas), school shark (Galeorhinus galeus) and California sea lion (Zalophus ...
The totoaba or totuava (Totoaba macdonaldi) is a species of marine fish endemic to the Gulf of California in Mexico. It is the largest member of the drum family Sciaenidae [4] and is the only extant species in the genus Totoaba. Originally an abundant species, the totoaba is now considered endangered due to human-related threats that ...
Other fish do seem to sleep, especially when purely behavioral criteria are used to define sleep. For example, zebrafish , [ 7 ] tilapia , [ 8 ] tench , [ 9 ] brown bullhead , [ 10 ] and swell shark [ 11 ] become motionless and unresponsive at night (or by day, in the case of the swell shark); Spanish hogfish and blue-headed wrasse can even be ...
Comparison of the depths which different colours of light penetrate clear open ocean waters and the murkier coastal waters. Water absorbs the warmer long wavelengths colours, like reds and oranges, and scatters the cooler short wavelength colours. [4] Fish and other aquatic animals live in a different light environment than terrestrial species do.
Sleep can follow a physiological or behavioral definition. In the physiological sense, sleep is a state characterized by reversible unconsciousness, special brainwave patterns, sporadic eye movement, loss of muscle tone (possibly with some exceptions; see below regarding the sleep of birds and of aquatic mammals), and a compensatory increase following deprivation of the state, this last known ...
In the first week of life, infants will sleep during both the day and night and will wake to feed. Sleep cycle duration is usually short, from 2–4 hours. [7] Over the first two weeks, infants average 16–18 hours of sleep daily. Circadian rhythm has not yet been established and infants sleep during the night and day equally. [3]
The black and white fish are three-stripe damselfish and the unstriped fish are blue-green chromis damselfish. If the triggerfish attacks, the damselfish will hide in the nearby cauliflower coral . If the triggerfish wants to hide, it will squeeze into a coral crevice and lock itself in place with its spines.
Kessler, K. T., 1860: A zoological voyage to the northern coast of the Black Sea and Crimea in 1858. Kyiv : 1–248, Pls. 1–2. Murgoci, A. A., 1940: Étude sur quelques espèces du genre Lepadogaster de la mer Noire.