Species guide

How to catch Halfmoon grouper

Epinephelus rivulatus

#1136

Stylized 2D illustration of Halfmoon grouper
#1136SaltwaterSaltwaterAtlanticPacificIndian Ocean

The halfmoon grouper is a reef-associated fish found in shallow to moderately deep waters. It is a sedentary predator that feeds on small fishes and crustaceans. This species is commonly caught near coral reefs and rocky areas.

Where they live

Inhabits coral reefs, rocky bottoms, algal flats, and seagrass beds from 1 to 150 meters deep in saltwater regions across the Atlantic, Pacific, and Indian Oceans. Often caught inshore using handlines from cliffs and reefs.

Typical size

Up to about 45 cm

What they eat

  • small fishes
  • crustaceans

Best baits

  • small fish bait
  • crustacean bait
  • shrimp

Best lures

  • soft plastic lures
  • small jigs
  • poppers

How to fish for them

  • handlining
  • bottom fishing
  • reef fishing

Track every Halfmoon grouper you catch.

Bobbr turns each catch into a species collection with notes. We're building it now — join the iOS waitlist for $19 lifetime founding access.

Claim founding access
How to catch Halfmoon grouper | Bobbr