These are primarily herbivorous fishes. They live in large groups in the open water over reefs where they feed in plankton and algae. They are medium-sized, silvery fishes.
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Kyphosus vaigiensis, Brassy Chub
- Max length 70 cm, common length 50 cm
- Gray with dusky dorsal and caudal fins
- Darker gray to yellowish lines along scale rows
- Aggregate over hard, algal-coated bottoms of exposed surf-swept outer reef flats, lagoons, and seaward reefs to a depth of at least 24 m
- Young (up to 5 cm) found among seaweed
- Adults are carnivorous during summer and autumn but herbivorous during winter
- Low resilience, minimum population doubling time 4.5 – 14 years. High vulnerability