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Cichlid. In addition to being mouthbrooders, some species continue to protect their young after they hatch, calling out to them when there is danger, and letting them swim back into their mouth to hold them safely away. [1] Apogonidae. Ariidae males carry a clutch of a few dozen eggs in their mouths, [2] for about two months before they hatch.
Psychrolutidae. The fish family Psychrolutidae (commonly known as blobfishes, [2] south america river teacher, [2] flathead sculpins, [2] or tadpole sculpins[2]) contains over 35 recognized species in 8 genera. [3] This family consists of bottom-dwelling marine sculpins shaped like tadpoles, with large heads and bodies that taper back into ...
Teleost. Teleostei (/ ˌtɛliˈɒstiaɪ /; Greek teleios "complete" + osteon "bone"), members of which are known as teleosts (/ ˈtɛliɒsts, ˈtiːli -/), [ 4 ] is, by far, the largest infraclass in the class Actinopterygii, the ray-finned fishes, [ a ] and contains 96% of all extant species of fish. Teleosts are arranged into about 40 orders ...
Fish retinas generally have both rod cells and cone cells (for scotopic and photopic vision), and most species have colour vision. Some fish can see ultraviolet and some are sensitive to polarised light. Among jawless fishes, the lamprey [1] has well-developed eyes, while the hagfish has only primitive eyespots. [2]
Juvenile fish are marketed as food. Whitebait is a marketing term for the fry of fish, typically between 25 and 50 millimetres long. Such juvenile fish often travel together in schools along the coast, and move into estuaries and sometimes up rivers where they can be easily caught with fine meshed fishing nets.
Chondrichthyes (/ kɒnˈdrɪkθiiːz /; from Ancient Greek χόνδρος (khóndros) 'cartilage' and ἰχθύς (ikhthús) 'fish') is a class of jawed fish that contains the cartilaginous fish or chondrichthyans, which all have skeletons primarily composed of cartilage. They can be contrasted with the Osteichthyes or bony fish, which have ...
Spawn (biology) The spawn (eggs) of a clownfish. The black spots are the developing eyes. Spawn is the eggs and sperm released or deposited into water by aquatic animals. As a verb, to spawn refers to the process of freely releasing eggs and sperm into a body of water (fresh or marine); the physical act is known as spawning.
Vision is an important sensory system for most species of fish. Fish eyes are similar to those of terrestrial vertebrates like birds and mammals, but have a more spherical lens . Their retinas generally have both rod cells and cone cells (for scotopic and photopic vision ), and most species have colour vision .