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Coral Rabbitfish

Siganus corallinus

Coral rabbitfish (Siganus corallinus) is a colorful reef-associated herbivore found on Indo-Pacific coral reefs and lagoons. It grazes on algae in loose schools and is typically wary around structure. Its spines can cause painful punctures.

Saltwater
Coral Rabbitfish reference image
Chaloklum Diving, cc-by, via Wikimedia Commons. Source: Wikimedia Commons.

Identification points

  • Broad oval, rabbitfish-shaped body with a small terminal mouth
  • Yellow to orange body with darker speckling/mottling on the head and flanks
  • Single prominent dorsal fin with stout venomous spines and a forked tail

Habitat

Shallow coral reefs, lagoon patch reefs, reef flats, and seagrass or rubble areas near coral growth, usually over protected inshore waters.

Bait notes

Best taken incidentally on small pieces of algae-like bait, shrimp, or squid near reef edges; small soft plastics or flies that imitate weed fragments can work. It is not a major target species in most areas.

Behavior

Feeds mainly on benthic algae and seagrass; often schools by day around reef structure and retreats into cover when disturbed. Spines make it defensive, and it may become less active at low light.

Caution

Dorsal, anal, and pelvic spines are venomous and can inflict painful wounds. Some reef-caught individuals may pose ciguatera risk in certain areas; local consumption advisories should be followed.

Fishing notes

Use light tackle and fish quietly along reef margins, drop-offs, and lagoon edges. Cast near algae-covered rocks or coral heads and let baits drift naturally; avoid snagging coral and check local rules before keeping any.