Brachaluteres taylori
A 4cm reef filefish most reliably spotted in Maluku and Sulawesi, Indonesia, hiding among soft coral year-round in warm 24-28C water.
A tiny, rounded filefish that tops out around 4cm, easy to mistake for a puffball of coral polyp until it moves. Body colour tends toward pale grey, cream or mottled tones that blend into the soft coral or sponge it is sitting against, with a small pointed snout and the single stiff dorsal spine typical of filefish folded flat against the back. Look for it hovering almost motionless right against its coral perch rather than swimming out in the open.
Divers typically find it parked motionless beside or within a soft coral colony, using the coral's colour and texture as cover rather than fleeing into open water. It reacts to divers by staying put or shuffling deeper into the coral branches instead of bolting, which makes patient, close-focus looking the best approach. Most sightings come from slow drifts along soft coral slopes rather than open sand or wall dives.
Its small size and colour-matching to soft coral make it one of those species divers swim straight past unless they are specifically hunting for it, so most sightings come from dedicated macro-focused dives rather than casual reef cruising.
No clear seasonal pattern shows up in the data, and with a comfortable range of 24.2 to 27.9C on these reefs it is realistically a year-round find. Plan the trip around good macro conditions rather than a particular month.
Reef neighbours a diver could mistake it for. Use the identification notes above to tell them apart.
Most reliably logged in Indonesia, especially Maluku and Sulawesi, with a second strong showing in the Philippines around Luzon. Sites in these regions turn it up as an uncommon but repeatable find for divers who know to check soft coral heads closely.
Mapping where Pigmy Leatherjacket is logged…
Indonesia is the strongest bet, particularly Maluku and Sulawesi, with additional sightings logged around Luzon in the Philippines. It shows up as an uncommon find at most sites, so it takes a slow, careful look at soft coral to spot one.
There is no strong seasonal signal in current sightings, and water temperatures on the sites where it is found stay in a comfortable 24 to 28C range year-round, so any time of year works for a dedicated search.
Look for a rounded body no bigger than about 4cm, pale mottled colouring, and a small pointed snout, usually sitting still against a soft coral colony rather than swimming freely. Its stillness and camouflage are often the biggest giveaways.
They stay tiny, reaching only around 4cm, which is part of why they are so easily overlooked on a reef.
No, they pose no risk to divers. They are small, non-aggressive, and simply hold still or retreat into coral when approached.
Site and sighting data is aggregated from diver logs, iNaturalist and GBIF. For taxonomy and conservation status:
Whitespotted Filefish
664 sites
