HomeFish encyclopediaRay-finned fishesPuffers and FilefishesFilefishesSlender filefish Slender filefish (Monacanthus tuckeri) Scientific name: Monacanthus tuckeri Bean, 1906 The Slender filefish (Monacanthus tuckeri) is a marine fish of the family Monacanthidae. Native range: Western Atlantic, North Carolina, USA and Bermuda to Antilles. Reported from northern South America. BiologyDorsal spines (total): 2; Dorsal soft rays (total): 32-37; Anal soft rays: 31 - 36. A small, slender filefish (body depth about 3 in SL) with a rather long, concave facial profile. Brownish gray with scattered small black spots.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMonacanthus tuckeriFamilyMonacanthidae (Filefishes)OrderTetraodontiformes (Puffers and Filefishes)ClassActinopterygii (Ray-finned fishes)Maximum length10.0Depth range2–50 m (7–164 ft)EnvironmentMarine; reef-associated; depth range 2 - 50 mClimateSubtropicalDistributionWestern Atlantic: North Carolina, USA and Bermuda to Antilles. Reported from northern South America.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026