Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Acanthuridae
(Surgeonfishes, tangs, unicornfishes) > Nasinae
Etymology: Naso: Latin, nasus = nose (Ref. 45335); tonganus: Named after Tonga, its type locality (Ref. 37792).
Environment / Climate / Range
Marine; reef-associated; depth range 3 - 20 m (Ref. 90102). Tropical
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 60.0 cm SL male/unsexed; (Ref. 37792)
Indo-West Pacific: East Africa to the Samoan Islands; throughout Micronesia.
Inhabits coral reefs (Ref. 37792). Feeds on leafy or fleshy algae and zooplankton (Ref. 37792). Found singly or in small groups (Ref. 37792).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Randall, J.E., 2002. Surgeonfishes of the world. Mutual Publishing and Bishop Museum Press, Hawai'i. 123 p. (Ref. 37792)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
Fisheries: minor commercial
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02884 (0.01626 - 0.05116), b=2.96 (2.80 - 3.12), based on LWR estimates for species & Genus-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 2.0 ±0.00 se; Based on food items.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (47 of 100) .