Actinopteri (ray-finned fishes) > Acanthuriformes
(Surgeonfishes) > Acanthuridae
(Surgeonfishes, tangs, unicornfishes) > Prionurinae
Etymology: Prionurus: Greek, prion, -onos = saw + Greek, oura = tail (Ref. 45335). More on author: Ogilby.
Environment: milieu / climate zone / depth range / distribution range
Marine; brackish; reef-associated; depth range - 20 m (Ref. 86942), usually - m (Ref. ). Subtropical; 20°C - 24°C (Ref. 27115)
Southwest Pacific: New South Wales and Lord Howe Island to Queensland; only Capricorn Group and Swains Reefs on the Great Barrier Reef. Also reported from Norfolk, Kermadec, and New Zealand (Ref. 8879).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 45.0 cm TL male/unsexed; (Ref. 2334)
soft rays: 23 - 25. Colour bluish grey with narrow vertical yellow bars on side of body and small yellow spots dorsally on body and on head. Keeled peduncular plates blue and black. Keeled peduncular plates usually 3, no scattered small thorn-like plates dorsally and posteriorly to midlateral series (Ref 9808).
Found along rocky shores, juveniles in estuaries and bays (Ref. 9710). Feeds on benthic algae (Ref. 9710).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Randall, J.E., G.R. Allen and R.C. Steene, 1990. Fishes of the Great Barrier Reef and Coral Sea. University of Hawaii Press, Honolulu, Hawaii. 506 p. (Ref. 2334)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 20.3 - 25.2, mean 24.4 °C (based on 123 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 2.0 ±0.00 se; based on food items.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (34 of 100) .
Nutrients (Ref. 124155
): Calcium = 35.1 [14.3, 74.5] mg/100g ; Iron = 1.28 [0.58, 2.69] mg/100g ; Protein = 18.3 [17.1, 19.6] % ; Omega3 = 0.354 [0.150, 0.865] g/100g ; Selenium = 18.2 [6.2, 45.7] μg/100g ; VitaminA = 22.6 [4.5, 111.7] μg/100g ; Zinc = 1.43 [0.80, 2.58] mg/100g (wet weight);