Common Triplefin
Forsterygion lapillum
The Common Triplefin (Forsterygion lapillum) is a small endemic marine fish found throughout New Zealand's coastal waters. Belonging to the family Tripterygiidae, this benthic species inhabits rocky reef environments and tide pools from shallow waters to roughly 30m depth. It is not a game fish and is too small for targeted angling, occasionally encountered as bycatch.
Identification points
- Three separate dorsal fins (characteristic of family Tripterygiidae)
- Small fish typically 6-10 cm with brownish-green coloration and darker vertical bars
- Males display brighter breeding colors; females typically duller with mottled patterns
Habitat
Rocky reef environments, tide pools, and shallow coastal waters with algae-covered substrates; endemic to New Zealand including Three Kings Islands and Chatham Islands.
Bait notes
Not targeted by anglers; if encountered as bycatch, extremely small hooks with tiny portions of worm, shrimp, or flesh.
Behavior
Benthic and relatively sedentary; feeds on small benthic invertebrates, crustaceans, and zooplankton; seeks shelter among rocks and algae.
Caution
None notable; not typically consumed due to small size.
Fishing notes
Not a game species; too small for targeted angling; occasionally caught incidentally on small hooks fished near rocky substrates.