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[11] [12] [13] A large scale fishery for orange roughy subsequently developed around New Zealand, and imports into the United States increased where it was renamed from the less gastronomically appealing "slimehead" through a U.S. National Marine Fisheries Service program during the late 1970s that identified underused species that should be ...
Slimeheads store energy as extracellular wax esters, which aid the fish in maintaining neutral buoyancy. Slimehead behaviour is not well studied, but some species sporadically form dense aggregations. In the case of the orange roughy, these aggregations (possibly segregated according to sex) may reach a population density of 2.5/m 2;.
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; Hoplostethus melanopus (M. C. W. Weber, 1913) - smallscale slimehead; Hoplostethus mento (Garman, 1899) - slimy head
Once, three species were placed in this genus, but Gephyroberyx philippinus is now considered to be a synonym of G. darwinii. [1] [2] Based on broadly overlapping morphological features, G. japonicus should also be regarded a synonym of G. darwinii, [2] [3] but both are recognized as valid species by FishBase: [4]
This one weird little fish — a beigeish critter found on sandy river bottoms in Tennessee and fond of munching on snails and water bugs — just upset 50 years of environmental efforts aimed at ...
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. It is a brownish-grey color with blackish fins.