Teleostei (teleosts) >
Beryciformes (Sawbellies) >
Melamphaidae (Bigscale fishes or ridgeheads)
Etymology: Sio: Acronym of Scripps Institute of Oceanography (Ref. 45335).
Eponymy: SIO is the official abbreviation of the Scripps Institution of Oceanography, California. Dr Nils Otto Gustaf Nordenskjöld (1869–1928) was a Finnish-Swedish geologist, geographer and polar explorer. [...] (Ref. 128868), visit book page.
More on author: Lönnberg.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathypelagic; depth range 200 - 3000 m (Ref. 51657). Deep-water; 20°S - 68°S
Atlantic, Indian and Pacific: south of 20°S. A single specimen was recorded from the Eastern Central Pacific (Ref. 5189). Record from the North Pacific (Moss, 1962) is in error (Ref. 51657).
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 12.3 cm SL male/unsexed; (Ref. 5189)
Trawled below 200 m (Ref. 4241). Young are found in warmer and more northern waters.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Gon, O., 1990. Melamphaidae. p. 218-221. In O. Gon and P.C. Heemstra (eds.) Fishes of the Southern Ocean. J.L.B. Smith Institute of Ichthyology, Grahamstown, South Africa. (Ref. 5189)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
Fisheries: minor commercial
Tools
Special reports
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Internet sources
![Image of Sio nordenskjoldii (Nordenskjold\](/images/thumbnails/gif/tn_Sinor_u0.gif "Image of Sio nordenskjoldii (Nordenskjold\")
