Fin's Fish Guide
The Cross-stripe butterfly (Chaetodon auriga) is a saltwater fish of the family Chaetodontidae that grows up to 25 cm.
Description
The threadfin butterflyfish is a striking butterflyfish (family Chaetodontidae) of the Indian and Pacific Oceans. The species grows to about 25 cm and has a deep, strongly compressed, mostly white body with fine crosshatched lines, a yellow rear and a black band through the eye. In adults one dorsal-fin ray is extended into a thread-like pennant. It lives on coral reefs and in weedy, rubble-covered zones, often alone or in pairs. As an omnivore it picks coral polyps, small invertebrates and algae. The species is collected for the aquarium trade and is harmless to humans.
Frequently asked questions
How do you recognise the Cross-stripe butterfly?
The Cross-stripe butterfly has a flattened, disc-shaped body, is mainly white and shows a flame-patterned pattern. Elongated, thread-like dorsal fin ray and a black eye band; often a false eyespot on the dorsal fin.
Where does the Cross-stripe butterfly live?
The Cross-stripe butterfly lives in the sea (marine waters) and is mostly found around stony or rocky ground. Indian and Pacific Ocean, from the Red Sea and East Africa to Hawaii.
How big does the Cross-stripe butterfly get?
The Cross-stripe butterfly grows to a maximum of about 25 cm.
Is the Cross-stripe butterfly dangerous to humans?
The Cross-stripe butterfly is venomous — handle spines with care and seek medical help after a sting if needed.
Is the Cross-stripe butterfly edible?
The Cross-stripe butterfly is rarely eaten.
More photos
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Chaetodon
More from the family Chaetodontidae
Want the complete picture on the Cross-stripe butterfly?
Point your camera at the fish and Fin names the species in seconds. Free, and the Cross-stripe butterfly is one of 12,519 species in the app.