Girella elevata
Dark, chunky reef fish logged at 38 sites in New South Wales, mostly uncommon sightings in 16 to 23 C water year-round.
A thick-set, oval-bodied fish with a small mouth and a uniform dark grey to charcoal-brown colouring that can look almost black in low light. The body is deep and slightly compressed, giving it a chunky, slab-sided look as it holds station near rock. There's no bold stripe or spot pattern to key on, so divers mostly rely on the dark, heavy-bodied silhouette and its habit of sitting tight against rocky structure rather than any single marking.
Divers typically find it holding close to rocky ledges, boulders, and reef structure rather than out in open water, moving with a steady, unhurried style rather than darting off. It tends to keep a bit of distance from divers but doesn't usually bolt for cover, making for calm if not close-up viewing. Most sightings are one or two fish rather than large groups.
Despite the name, it's a member of the sea chub family, a group better known for grazing algae off rocky reefs than for open-water feeding, so look for it working reef edges rather than mid-water.
Sightings don't show a clear seasonal pattern, and the observed water temperature range of 16.4 to 23.3 C spans most of the NSW diving calendar, so it's reasonable to look for this species on rocky reef dives year-round.
Reef neighbours a diver could mistake it for. Use the identification notes above to tell them apart.
Every logged sighting in this dataset comes from New South Wales, Australia, making it the place to look for this species. Within NSW it turns up as a reliable, if uncommon, find across a wide spread of rocky reef sites rather than being concentrated at just one or two locations.
Mapping where Eastern Rock Blackfish is logged…
New South Wales, Australia is the region where this species is consistently logged, spread across a wide range of rocky reef dive sites rather than one hotspot.
There's no strong seasonal signal in sightings, and the species is recorded across a broad 16.4 to 23.3 C temperature range, so it can be found on NSW reef dives throughout the year.
Look for a heavy-bodied, dark grey to charcoal fish holding close to rocky structure. It lacks bold stripes or spots, so its plain dark colouring and chunky oval shape near rock are the main clues.
They typically reach around 43 cm, making them a solidly built mid-sized reef fish rather than a small one.
No, they pose no danger to divers and are generally a calm, unbothered presence around rocky reefs.
Site and sighting data is aggregated from diver logs, iNaturalist and GBIF. For taxonomy and conservation status:
Bermuda Chub
451 sites
