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Chaetodon austriacus Rüppell, 1836 Blacktail butterflyfish |
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photo by
Field, R. |
| Family: | Chaetodontidae (Butterflyfishes) | |||
| Max. size: | 13 cm SL (male/unsexed) | |||
| Environment: | reef-associated; marine; depth range 1 - 15 m, non-migratory | |||
| Distribution: | Western Indian Ocean: Red Sea and Gulf of Aden. | |||
| Diagnosis: | Dorsal spines (total): 13-13; Dorsal soft rays (total): 20-21; Anal spines: 3-3; Anal soft rays: 19-19; Vertebrae: 24-24. Axillary scale present. Color: Presence of band around head connected at the nape and throat. Mouth and chin area black while interorbital area with varying patterns of lines, dots and triangles. | |||
| Biology: | Found in coral rich areas; juveniles confined to single coral heads (Ref. 9710). Territorial and usually in pairs. Mainly diurnal. Oviparous (Ref. 205). Form pairs during breeding (Ref. 205). | |||
| IUCN Red List Status: | Least Concern (LC); Date assessed: 07 October 2009 Ref. (130435) | |||
| Threat to humans: | harmless | |||