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The few ray fins that do exist are mainly in the Beryciformes and Lampriformes, which are also ancient forms. Most deep-sea pelagic fishes belong to their own orders, suggesting a long evolution in deep-sea environments. In contrast, deep-water benthic species, are in orders that include many related shallow-water fishes. [29]
In fact, skates are the only cartilaginous fish taxon to exhibit more diversity of species at higher latitudes. A cool, temperate to polar water in the deep sea can be a favorable environment for skates. [7] As the water becomes more shallow and warmer, skates are seen to be replaced by stingrays.
The blob fish (Psychrolutes phrictus) is a species of deep-sea fish of the family Psychrolutidae. It feeds mainly on crustaceans, molluscs, and sea pens. It lives off the continental shelves in very deep water (839–2800 m) in the North Pacific Ocean by the coasts of Japan, the Bering Sea, and California. When the female lays eggs the adult ...
The fish family Psychrolutidae (commonly known as blobfishes, [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 small, flat tails. The skin is loosely attached and ...
A fish (pl.: fish or fishes) is an aquatic, anamniotic, gill-bearing vertebrate animal with swimming fins and a hard skull, but lacking limbs with digits.Fish can be grouped into the more basal jawless fish and the more common jawed fish, the latter including all living cartilaginous and bony fish, as well as the extinct placoderms and acanthodians.
The few ray fins that do exist are mainly in the Beryciformes and Lampriformes, which also are ancient forms. Most deep sea pelagic fishes belong to their own orders, suggesting a long evolution in deep sea environments. In contrast, deep water benthic species are in orders that include many related shallow water fishes. [19]
Psychrolutes marcidus, the smooth-head blobfish, [1] also known simply as blobfish, [1] is a deep-sea fish of the family Psychrolutidae. It inhabits the deep waters off the coasts of mainland Australia and Tasmania, as well as the waters of New Zealand. [2] Blobfish are typically shorter than 30 cm (12 in).
The anatomy of fish is often shaped by the physical characteristics of water, the medium in which fish live. Water is much denser than fish, holds a relatively small amount of dissolved oxygen, and absorbs more light than air does. The body of a fish is divided into a head, trunk and tail, although the divisions between the three are not always ...