Actinopterygii (ray-finned fishes) > Tetraodontiformes
(Puffers and filefishes) > Monacanthidae
Etymology: Aluterus: Greek, a = without, privative + Latin, lutarius, -a, -um = that lives in the mud (Ref. 45335).
Environment / Climate / Range
Marine; reef-associated; depth range 3 - 120 m (Ref. 36484), usually 3 - 20 m (Ref. 40849). Subtropical; 46°N - 24°S
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 110 cm TL male/unsexed; (Ref. 9710); common length : 55.0 cm TL male/unsexed; (Ref. 5450); max. published weight: 2.5 kg (Ref. 26340)
soft rays: 46 - 52. Snout concave (Ref. 1602); olive brown to grey in color, juveniles may be yellowish brown with dark spots (Ref. 4421). Elongate, strongly compressed filefish; tan with blue lines and spots. Caudal fin rounded (Ref. 26938) and long (Ref. 13442). Gill opening oblique, pelvic terminus rudimentary or absent; body and head with scattered small black spots (Ref. 13442).
Circumtropical. Western Atlantic: Nova Scotia, Canada and northern Gulf of Mexico to Brazil (Ref. 7251). Eastern Atlantic: St. Paul's Rocks (Ref. 13121), Cape Verde and Ascension Island (Ref. 3592); São Tomé Island (Ref. 34088); South Africa (Ref. 4421). Pacific Ocean: southern Japan to the southern Great Barrier Reef, New Caledonia and Easter Island (Ref. 37816). In the eastern Pacific, from the Gulf of California to Colombia (Ref. 9318).
Inhabit lagoon and seaward reefs (Ref. 9710). Occasionally are seen under floating objects (Ref. 1602). Juveniles may travel with weed rafts in open ocean for a long time and reaching a large size. Adults are usually seen along deep coastal slopes or outer reef drop-offs in about 20 meters depth (Ref. 48637). Benthopelagic (Ref. 58302). Feed on algae, seagrass, hydrozoans, gorgonians, colonial anemones, and tunicates. Caught at the surface using a hand net (Ref. 26165).
Hutchins, J.B., 1986. Monacanthidae. p. 882-887. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 4421)
IUCN Red List Status (Ref. 90363)
CITES (Ref. 94142)
Threat to humans
Reports of ciguatera poisoning (Ref. 4690)
Gamefish: yes; aquarium: commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic Level (Ref. 69278
): 2.8 ±0.5 se; Based on diet studies.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Assuming tm=3-4).
Vulnerability (Ref. 59153
): High to very high vulnerability (70 of 100) .