Foxface

Siganus vulpinus

Foxface is a venomous rabbitfish from tropical Indo-Pacific reefs, prized in aquariums more than by anglers. It grazes on algae in pairs or small groups and uses a bold yellow body with a dark facial mask for warning camouflage.

Saltwater

Foxface reference image — Rickard Zerpe, cc-by, via Wikimedia Commons. Source: Wikimedia Commons.

Identification points

Bright yellow body with a distinctive dark brown to black mask over the face and eyes
Deep, laterally compressed rabbitfish body with a small mouth and protruding snout
Long venomous dorsal fin with prominent spines; fins often edged darker than the body

Habitat

Shallow coral reefs, reef flats, lagoons, and outer reef slopes with abundant algal growth; usually stays close to structure and rubble in tropical saltwater.

Bait notes

Not a targeted game fish; if encountered while fishing near reefs, it may take small algae-based offerings, shrimp, or tiny pieces of fish, but is usually observed rather than fished for.

Behavior

Primarily diurnal and herbivorous, browsing filamentous algae and seaweeds. It is wary, often pairs or schools loosely, and can erect venomous dorsal, anal, and pelvic spines when threatened.

Caution

Venomous dorsal, anal, and pelvic spines can cause intense pain and swelling; avoid handling unless necessary. Consume only if locally legal and positively identified, as reef fish regulations may apply.

Fishing notes

If caught on light tackle around reefs, handle with extreme care and avoid gripping near the spines. Use a landing net or pliers; release promptly. It is better treated as a non-target reef species.