helmonops truncatus also commonly referred as the Eastern Talma or Truncate coralfish is a cold water species and inhabit coastal bays and near estuaries at a depth of 10 - 70 m. It is endemic to Australia, occurring from southern Queensland to southern New South Wales.
The Eastern Talma can be recognised by its colouration and shape. It has a tubular snout, steep nape, and tall, pointed dorsal and anal fins that have vertical posterior margins. It is brown or silver with five dark bands. The first passes through the eye, the next three are progressively broader, and the fifth crosses the caudal peduncle. Juveniles look similar to the adults, but have an ocellus on the dorsal fin which is absent in adults
In the wild Chelmonops truncatus feed on algae as well as various worms, tunicates, and crustaceans. Adult Truncate Coralfish can typically be found in pairs. Rarely seen in the trade.
Butterflyfish are not recommended for reefs as they will pick at or eat a wide variety of corals, fan worms, and other invertebrates. Most Butterflyfish are known to pick at Aiptaisia, a parasitic anemone.
Chaetodon truncatus Kner, 1859
Chelmo trochilus Günther, 1874
Chelmo truncatus (Kner, 1859)
Chelmonops trochilus (Günther, 1874)
Classification: Biota > Animalia (Kingdom) > Chordata (Phylum) > Vertebrata (Subphylum) > Gnathostomata (Superclass) > Pisces (Superclass) > Actinopterygii (Class) > Perciformes (Order) > Chaetodontidae (Family) > Chelmonops (Genus) > Chelmonops truncatus (Species)