Lethrinus harak
Thumbprint Emperor
Kingdom
Animalia
Phylum
Chordata
Class
Actinopterygii
Order
Perciformes
Family
Lethrinidae
Genus
Lethrinus
Species
Lethrinus harak
Colours
Distinguishing features
A medium sized silvery fish with a large eye and a distinct darker oval spot on the flank, which can vary in colour from very black to almost invisible.
Size
- Up to 60 cm (Standard length)
Depth range
- Depth range data is not yet available.
Synonyms
Distribution
©Atlas of Living Australia: Australian distribution
Distribution and habitat preferences
Usually near areas of sand or rubble close to coral reef areas.
Can be found in most locations around the island.
Behaviour
This species is an active diurnal feeder, and hunts for crustaceans and other invertebrates over the reef flat. They tend to move in short bursts, then hover while they inspect the bottom, then move again, often stopping to take a bite from the substratum every now and then. The Emperors are protogynous hermaphrodites, starting life as females and then changing sex to male at a larger size. Maximum age for this species is reported to be 15 years.
Web resources
References
- Arvedlund, M. and A. Takemura (2006). The importance of chemical environmental cues for juvenile Lethrinus nebulosus Forsskål (Lethrinidae, Teleostei) when settling into their first benthic habitat, Journal of Experimental Marine Biology and Ecology, 338: 112-122. LIRS catalog number 90061.
- Bean, K., B.D.Mapstone, C.R. Davies, C.D. Murchie and A.J. Williams. (2003). Gonad development and evidence of protogyny in the red-throat emperor on the Great Barrier Reef, Journal of Fish Biology, 62: 299-310. LIRS catalog number 90062.
- Ebisawa, A. (2006). Reproductive and sexual characteristics in five Lethrinus species in waters off the Ryukyu Islands, Ichthyological Research, 53: 269-280. LIRS catalog number 90063.
- View all references