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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]
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 is a genus of fishes in the slimehead family. Species ... (Darwin's slimehead) Gephyroberyx japonicus (Döderlein, 1883) (big roughy) References
Gephyroberyx darwinii, the Darwin's slimehead, a slimehead fish species in the genus Gephyroberyx; Gossypium darwinii, a cotton plant species found only on the Galapagos Islands; Gymnodactylus darwinii, Gray, 1845, a gecko species in the genus Gymnodactylus
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
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 ]
The fish is a bright, brick-red color, fading to a yellowish-orange after death. Like other slimeheads, orange roughy is slow-growing and late to mature, resulting in a very low resilience, making them extremely susceptible to overfishing. Many stocks (especially those off New Zealand and Australia, which were first exploited in the late 1970s ...
Marilyna darwinii, [1] known as the Darwin toadfish, [2] is a species of pufferfish in the family Tetraodontidae. It is native to the Western Pacific, where it is known from Papua New Guinea and reported from Australia. It inhabits tropical marine and brackish waters and reaches 9.5 cm (3.7 inches) SL. [3]