Karalepis stewarti
A rare little find on North Island, New Zealand reefs, comfortable across a wide 10.6 to 21.2 C range and worth slowing down for.
A small, slender bottom-dweller reaching about 10 cm, with a mottled brown-and-cream body that breaks up its outline against rock and rubble. Look for the three separate dorsal fins characteristic of triplefins, held slightly raised, and a blunt, scaled head that sits distinctly from the slimmer body. It perches propped on its pelvic fins rather than swimming freely, which is often the first giveaway.
Divers find it resting motionless on rock and reef surfaces, propped up on its pelvic fins in typical triplefin fashion, rather than swimming in open water. It tends to sit tight to structure and rely on its mottled camouflage instead of bolting, so slow, close looking pays off far more than chasing. Most logs describe it as an easy fish to miss and a real find rather than something that swims out to greet divers.
Triplefins like this one lack a swim bladder, which is exactly why it perches on the bottom propped on its fins instead of hovering in the water column like most reef fish.
Sightings span a broad temperature range from 10.6 to 21.2 C with no detected seasonal pattern, so it appears to be a year-round resident rather than a seasonal visitor. Plan the dive around site conditions and visibility rather than a particular month.
Reef neighbours a diver could mistake it for. Use the identification notes above to tell them apart.
Every logged sighting comes from New Zealand, concentrated on North Island reefs, making it effectively a North Island specialty for divers chasing this species. There is no meaningful record of it elsewhere, so this is the one place to plan around.
Mapping where Scaly-headed Triplefin is logged…
It is essentially a New Zealand species for divers, with all recorded sightings coming from North Island sites. Treat any North Island reef dive as your best chance rather than looking elsewhere.
There is no clear season in the data, with sightings logged across a wide 10.6 to 21.2 C temperature range. It appears to be present year-round on North Island reefs.
Look for a small, mottled brown-and-cream fish around 10 cm long, propped on its pelvic fins on rock or rubble rather than swimming. The three separate dorsal fins and blunt scaled head are the key triplefin giveaways.
They reach around 10 cm, making them one of the smaller fish you will spot on a New Zealand reef dive. Their size and camouflage mean they are easy to swim straight past.
No, it is logged as rare at most sites where it has been recorded, with only a couple of sites reporting it as uncommon. It rewards divers who slow down and check rocky surfaces closely rather than swimming past quickly.
Site and sighting data is aggregated from diver logs, iNaturalist and GBIF. For taxonomy and conservation status:
Klipfish
1,860 sites
