HomeFish encyclopediaRay-finned fishesPricklefishes, Bigscales and GibberfishesBigscale fishes or ridgeheadsShoulderspine bigscale Shoulderspine bigscale (Melamphaes suborbitalis) Scientific name: Melamphaes suborbitalis Gill, 1883 The Shoulderspine bigscale (Melamphaes suborbitalis) is a brackish-water fish of the family Melamphaidae. Species factsScientific nameMelamphaes suborbitalisFamilyMelamphaidae (Bigscale fishes or ridgeheads)OrderStephanoberyciformes (Pricklefishes, Bigscales and Gibberfishes)ClassActinopterygii (Ray-finned fishes)Maximum length10.0Depth range500–1000 m (1640–3281 ft)EnvironmentMarine; brackish; bathypelagic; depth range 500 - 1000 mClimateDeep-waterDistributionNorth Atlantic: including 7 specimens recorded between about 18? and 29?N and 15? and 25?W. Northwest Atlantic: Canada. Southwest Pacific: New South Wales, Australia and New Zealand.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Assuming tm=2-4) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026