‹ Fish Finder· #051
Lagoon Triggerfish
Rhinecanthus aculeatus
Bislamastrongskin · sanpepafis— names this kind of animal, not this species alone

- Habitat
- Reef
- Max size
- 30 cm
- Depth
- 0-50 m
- Family
- Balistidae
The lagoon triggerfish, also known as the blackbar triggerfish, the Picasso triggerfish, or the Picassofish, is a triggerfish, up to 30 cm (12 in) in length, found on reefs in the Indo-Pacific region.
Adapted from Wikipedia, licensed under CC BY-SA 4.0.
Easily confused with
Side by side, with what tells them apart.


Both are sand-brown above and white below, with a pig-like snout and bold dark markings. Reef Triggerfish has one broad black band running diagonally from the eye down to the anal fin, and a black wedge on the base of the tail. Lagoon Triggerfish has blue lines crossing the top of the head between the eyes, and a dark patch mid-flank with pale diagonal stripes behind it.
See the Reef Triggerfish →


Both have a dark streak below the eye and dark marks on a pale body. Blackbelly Triggerfish is plain pale brown above and white below, with one very large black blotch low on the belly, just in front of the anal fin. Lagoon Triggerfish has blue lines across the top of the head and a dark patch mid-flank with pale diagonal stripes behind it.
See the Blackbelly Triggerfish →