← Fish wiki · Bloom map

Darkspot tuskfish

Choerodon monostigma

Darkspot tuskfish (Choerodon monostigma) — illustration

Illustration: Bloom by Day

Mottled pink-brown with blue lines on the snout and around the eye, and a single ringed black spot sitting in the middle of the dorsal fin — on the FIN, not the body. It hangs over rubble bottoms in the deeper part of the reef and is unhurried about moving.

how to recognise it

don’t confuse with

Field marks read from Fishes of Australia, 2026-10-15. Our wording, their facts. Max size 25 cm TL.

facts

habitat
reef
size
~18 cm, to 25 cm
Max size from Fishes of Australia (25 cm TL); the typical size is Bluebird’s, not from a cited source
records
13 at 6 spot(s), none of them in this region
Recorded at Green Island (Cairns), Fitzroy Island (Cairns), Magnetic Island — Geoffrey Bay, Cid Harbour (Whitsunday — West), Pioneer Rocks (Whitsundays), Cairns Reef (Great Barrier). A count of occurrence records, not abundance. Records are where someone looked.

when it has been recorded

JFMAMJJASOND
A gap means no record in the sample, not absence.

the rule

QLD — Min: 30cm · Combined limit: 6 in total of all tuskfish species
source · verified 2026-10-10
no NSW rule listed — check before you dive
no closed season recorded for this species — that is not the same as open; check the official page
Rules checked 2026-10-13 against qld.gov.au

Rules change. Check before you dive.

See where it lives → bloombyday.com, the live map Diving today? → bluebirdday.app, the swell, wind and viz forecast
Occurrence data: Atlas of Living Australia (ala.org.au), CC-BY 4.0.
Diver transect counts: Reef Life Survey (reeflifesurvey.com), CC-BY 4.0, supplied via ALA.
Target and protected species: Queensland tidal-water size and possession limits (qld.gov.au) and NSW saltwater bag and size limits plus threatened species lists (dpird.nsw.gov.au).
Habitat and size: Bluebird, approximate, from general knowledge. Not cited. FishBase is CC BY-NC and this app is commercial, so it is not used.
Description written for Bloom. RECORDS ARE WHERE SOMEONE LOOKED, NOT WHERE THE FISH ARE. A record count is a count of records near here and nothing else -- it is not abundance, and a species with few records is not rare. Absence of records is not absence of fish.