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Only the economically important species have had their reproduction studied in any detail; the larvae and juveniles of Darwin's slimehead are pelagic and frequent rather shallow waters near the coast, whereas in orange roughy, the early life stages are apparently confined to deeper water (around 200 m). Slimeheads are very slow-growing and long ...
Aulotrachichthys latus, the Philippine luminous roughy, is a slimehead native to the Western Pacific around Indonesia and the Philippines. It is a deep-water species, ranging from 164 to 723 metres (538 to 2,372 ft) beneath the surface.
The smallscale slimehead (Hoplostethus melanopus) is a deepwater fish of the family Trachichthyidae. It lives on the continental shelf at a depths of 400–914 m (1,312–2,999 ft). It can reach sizes of up to 25.0 cm (9.8 in) TL .
The orange roughy is the largest known slimehead species at a maximum standard length (a measurement that excludes the tail fin) of 75 cm (30 in) and a maximum weight of 7 kg (15 lb). The average commercial catch size is commonly between 35 and 45 centimetres (14 and 18 in) in length, again, varying by area.
Gephyroberyx darwinii, the big roughy or Darwin's slimehead, is a species of fish in the slimehead family found widely in the Atlantic and Indo-Pacific oceans. [2] This deep-sea species reaches a length of 60 cm (2.0 ft) and is mainly found at depths of 200 to 500 m (660–1,640 ft), but has been recorded between 9 and 1,210 m (30–3,970 ft). [2]
The silver roughy or Mediterranean slimehead (Hoplostethus mediterraneus) is a small deep-sea fish species belonging to the slimehead family (Trachichthyidae). [1] It is recognized as a bony fish and is metallic with orange to red fins. [ 2 ]
Hoplostethus mediterraneus (Cuvier, 1829) - Mediterranean slimehead, silver roughy Hoplostethus melanopeza C. D. Roberts & M. F. Gomon, 2012 [ 2 ] - New Zealand giant sawbelly Hoplostethus melanopterus Fowler , 1938 - blackfin roughy
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