Scientific Name
Cromileptes altivelis

Common Name
Humpback grouper

Biology
Generally inhabits lagoon and seaward reefs and are typically found in dead or silty areas (Ref. 9710). Also found around coral reefs and in tide pools. Growth is very slow. Feed on small fishes and crustaceans (Ref. 37816). Artificial spawning was accomplished by Tang et al. 1979 (Ref. 6568) where eggs are buoyant, 0.80-0.83 mm in diameter with a single oil droplet; larvae died after 7 days. Juveniles are commonly caught for the aquarium trade while adults are utilized as a food fish (Ref. 9710). In Hong Kong live fish markets

Classification

Classified By

Valenciennes, 1828

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Sea basses: groupers and fairy basslets (Serranidae)

Distribution

Region

Western Pacific

Distribution

Western Pacific: southern Japan to Palau, Guam, New Caledonia and southern Queensland, Australia. Eastern Indian Ocean: Nicobar Islands to Broome, Western Australia. Reports from western Indian Ocean (Heemstra and Randall 1984, 1986, Ref. 3153 and 4319 respectively) are unsubstantiated, except one from Kenya (Smith 1954, Ref. 6514) which seems valid. Records from Hawaii are probably based on released aquarium fishes

Range

32°N - 23°S, 88°E - 168°E

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

2 m

Depth To - meters

40 m

Zone

reef-associated

Environment

Marine; reef-associated; depth range 2 - 40 m

Trophic Level

4.5 s.e. 0.80 Based on food items.

Occurs in Marine / Salt water

True

Occurs in Brackish water

False

Occurs in Fresh Water

False

Occurs on Reefs

True

Is kept in Aquariums

True

Physical Size and Genetics

Maximum Length

70.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 1.0000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: commercial; aquaculture: commercial; aquarium: commercial

Vulnerability

Moderate to high vulnerability (54 of 100)

Resilience

Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Vulnerable (VU) (A4cd), IUCN Grouper and Wrasse Specialist Group