HomeFish encyclopediaRay-finned fishesScorpionfishes and FlatheadsVelvetfishesMossback velvetfish Mossback velvetfish (Paraploactis trachyderma) Scientific name: Paraploactis trachyderma Bleeker, 1865 The Mossback velvetfish (Paraploactis trachyderma) is a marine fish of the family Aploactinidae. Native range: Indo-Pacific, endemic to Australia. BiologySnout with minute cirri; large patch on tip of snout across lachrymal bones about equal in size to those in smaller patch on nasal bone. Fleshy pad on isthmus with width about 1/4-1/3 of its length.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameParaploactis trachydermaFamilyAploactinidae (Velvetfishes)OrderScorpaeniformes (Scorpionfishes and Flatheads)ClassActinopterygii (Ray-finned fishes)EnvironmentMarine; demersalClimateSubtropicalDistributionIndo-Pacific: endemic to Australia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmless SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026