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Notothenioidei is one of 19 suborders of the order Perciformes. The group is found mainly in Antarctic and Subantarctic waters, with some species ranging north to southern Australia and southern South America. [2] [3] Notothenioids constitute approximately 90% of the fish biomass in the continental shelf waters surrounding Antarctica. [4]
The family includes over 100 species, making it the most diverse group of fish in the Southern Ocean. Nototheniidae inhabits a variety of habitats, from shallow coastal waters to deep ocean trenches. Many species are bottom-dwellers and can be found in rocky areas or on the seafloor, while others are pelagic and swim in the water column.
The Bathydraconidae, or the Antarctic dragonfishes, are a family of marine ray-finned fishes, notothenioids belonging to the Perciform suborder Notothenioidei. The family comprises four genera. These fishes are endemic to deep waters off Antarctica. [2] [3]
Notothenia fishes have oblong bodies which are compressed towards the tail with a large head, small eyes and a large mouth. The lower jaw does not protrude and the mouth extends as far back as the middle of the eye.
Bovichtidae, the temperate icefishes or thornfishes, is a family of marine ray-finned fishes, classified in the suborder Notothenioidei of the order Perciformes. They are native to coastal waters off Australia, New Zealand, and South America.
The longfin icedevil (Aethotaxis mitopteryx), also known as the threadfin pinhead, is a species of marine ray-finned fish belonging to the family Nototheniidae, the notothens or cod icefishes. It is native to the Southern Ocean where it can be found at depths down to 850 metres (2,790 ft).
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Artedidraconidae fishes are characterised by having a body tapering from their large heads to their caudal fins.They have 2 dorsal fins, the first contains 2-7 spines and the second has 22-30 segmented soft rays while the anal fin has 14-21 soft rays.
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