Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Chaetodontidae
Etymology: Chelmon: Greek, cheilon, -onos = a grey mullet (Ref. 45335).
Environment / Climate / Range
Marine; brackish; reef-associated; non-migratory; depth range 1 - 25 m (Ref. 9710). Tropical
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 20.0 cm TL male/unsexed; (Ref. 9710); max. reported age: 10 years (Ref. 72479)
soft rays: 19 - 21. Easily identified by the yellow banding and long snout. Juveniles similar to adults (Ref. 48636). Distinguished from C. marginalis by its color pattern and number of dorsal fin rays (fewer in C. rostratus.
Western Pacific: Andaman Sea to Ryukyu Islands and Australia.
A common species found singly and in pairs along rocky shores and coral reefs; also in estuaries and silty inner reefs (Ref. 9710, 48636). Territorial species (Ref. 48636). Oviparous (Ref. 205), monogamous (Ref. 52884). Forms pairs during breeding (Ref. 205).
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.
IUCN Red List Status (Ref. 90363)
Threat to humans
Fisheries: minor commercial; aquarium: commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01113 (-0.19637 - 0.21863), b=3.06 (2.95 - 3.18), based on LWR estimates for this family-BS (Ref. 93245
Trophic Level (Ref. 69278
): 3.5 ±0.37 se; Based on food items.
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (15 of 100) .