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Coral trout

Coral trout are groupers, not trout, and the species that gives the reef its signature splash of red. They hang in the lee of bommies and under ledges watching for small fish, and the big ones are bold enough to follow a diver for a while to see what gets stirred up.

Plectropomus leopardus

What to look for

Orange-red to deep crimson with small bright blue spots over the whole body and a rounded tail, plus a wide mouth full of fine teeth. They can darken or pale in seconds. Several close relatives share the reef, including the bar-cheeked and footballer trout; the oceanic coral trout of the outer reefs is bigger and paler with larger spots.

Cleaning stations

One of the best times to watch a coral trout is at a cleaning station, where it hangs open-mouthed and changes colour while tiny cleaner wrasse pick parasites from its gills and teeth. Stay a few metres back and the show continues. They are the most valuable fish in the reef’s commercial line fishery, and the green zones hold noticeably bigger ones.

Where to see it

Dive with us to see it

You might also see

All Great Barrier Reef marine life →