Chelmon rostratus
Chelmon rostratus (Linnaeus, 1758)
Copperband butterflyfish
Chelmon rostratus
photo by Randall, J.E.


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Family:  Chaetodontidae (Butterflyfishes)
Max. size:  20 cm TL (male/unsexed); max. reported age: 10 years
Environment:  reef-associated; brackish; marine; depth range 1 - 25 m, non-migratory
Distribution:  Western Pacific: Andaman Sea to Ryukyu Islands and Australia.
Diagnosis:  Dorsal spines (total): 9-9; Dorsal soft rays (total): 28-30; Anal spines: 3-3; Anal soft rays: 19-21. Description: Head and body white sliver, vertical bars orange, black-edged, one across eye, two on anterior half of body, one broader posteriorly; dark brownish bar on caudal peduncle, fins yellow-orange (Ref. 90102). Easily identified by the yellow banding and long snout. Juveniles similar to adults (Ref. 48636). Snout length 1.7-2.1 in HL. Body depth 1.5-2.0 in SL (Ref. 90102).
Biology:  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). Mature adults form pairs during breeding (Ref. 205).
IUCN Red List Status: Least Concern (LC); Date assessed: 09 October 2009 Ref. (130435)
Threat to humans:  harmless


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