Search results
Results from the WOW.Com Content Network
The crocodile icefish or white-blooded fish comprise a family (Channichthyidae) of notothenioid fish found in the Southern Ocean around Antarctica. They are the only known vertebrates to lack hemoglobin in their blood as adults. [ 2 ]
Bony fish can be further divided into those with lobe fins and those with ray fins. Lobe fins have the form of fleshy lobes supported by bony stalks which extend from the body. [16] Lobe fins evolved into the legs of the first tetrapod land vertebrates, so by extension an early ancestor of humans was a lobe-finned fish.
Osteichthyes (/ ˌ ɒ s t iː ˈ ɪ k θ iː z / ost-ee-IK-theez; from Ancient Greek ὀστέον (ostéon) 'bone' and ἰχθύς (ikhthús) 'fish'), [2] also known as osteichthyans or commonly referred to as the bony fish, is a diverse clade of vertebrate animals that have endoskeletons primarily composed of bone tissue.
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.
Leporinus fasciatus, commonly known as the banded leporinus [2] or the black-banded leporinus, [3] is a species of characin in the family Anostomidae. L. fasciatus is native to the Amazon Basin in South America , but has been introduced into the US states of Florida and Hawaii . [ 4 ]
Epipelagic fish occupy sunlit waters down to 200 metres (110 fathoms), mesopelagic fish occupying deeper twilight waters down to 1,000 meters (3,300 ft), and bathypelagic fish inhabiting the cold and pitch black depths below. Most oceanic species (78 per cent, or 44 per cent of all fish species), live near the shoreline.
These fish have a yellowish gray or pinkish toned ground color with dark slate-gray splotches, creating a marbling or leopard effect over the body and fins. The color pattern is darker along the top and lighter below. [28] The marbled lungfish's genome contains 133 billion base pairs, making it the largest known genome of any vertebrate.
The olfactory lobes are very large in fish that hunt primarily by smell, such as hagfish, sharks, and catfish. Behind the olfactory lobes is the two-lobed telencephalon, the structural equivalent to the cerebrum in higher vertebrates. In fish the telencephalon is concerned mostly with olfaction. [59] Together these structures form the forebrain.