Actinopterygii (ray-finned fishes) > Stephanoberyciformes(Pricklefishes, bigscales and gibberfishes) > Melamphaidae(Bigscale fishes or ridgeheads)Etymology: Scopelogadus: Greek, skopelos = a lantern fish + Latin, gadus = a fish; cod? (Ref. 45335). More on author: Günther. Environment: milieu / climate zone / depth range / distribution rangeMarine; bathypelagic; depth range 300 - 3385 m (Ref. 26165). Deep-water; 40°N - 30°SIndian and Atlantic: in tropical waters to 20-30°S. Western Pacific: Japan (Ref. 559) to Australia (Ref. 7300) and New Zealand (Ref. 5755). Eastern Pacific: Chile (Ref. 9068). Length at first maturity / Size / Weight / AgeMaturity: Lm ?, range 4 - 9.4 cmMax length : 9.4 cm SL male/unsexed; (Ref. 4241) Trawled below 300 m (Ref. 4241). Life cycle and mating behaviorMaturity | Reproduction | Spawning | Eggs | Fecundity | LarvaeEbeling, A.W., 1986. Melamphaidae. p. 427-432. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 4241)IUCN Red List Status (Ref. 120744)CITES (Ref. 118484) Threat to humansFisheries: of no interestEstimates based on modelsPreferred temperature (Ref. 115969): 3 - 7, mean 4.3 (based on 1810 cells). Phylogenetic diversity index (Ref. 82805= 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.01000 (0.00382 - 0.02615), b=3.04 (2.81 - 3.27), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245Trophic Level (Ref. 69278): 3.5 ±0.35 se; Based on food items. Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.). Vulnerability (Ref. 59153): Moderate to high vulnerability (48 of 100) .