Bigeye Seabream (species: Monotaxis grandoculis) in Lizard Island Field Guide (Lizard Island Field Guide)
Monotaxis grandoculis
Bigeye Seabream

©Alex Vail: Adult Bigeye Seabream at Cod Hole near Lizard Island

©Anne Hoggett: Subadult Bigeye Seabream at Lizard Island. Note width of white bars and absence of yellow on tail.

©Anne Hoggett: A juvenile Monotaxis grandoculis about 15 cm long on the NE side of Lizard Island.
Kingdom Animalia
Phylum Chordata
Class Actinopterygii
Order Perciformes
Family Lethrinidae
Genus Monotaxis
Species Monotaxis grandoculis



Distinguishing features

Large eye and distinct bump on head. Juveniles have three or four white vertical bars, 3 to 4 scale rows wide, on a dark body that is paler below. Body bars fade with age, starting with first and last bars. Large adults have no bars, tail loses colour but there are often yellow tints on head, especially lips. A dark spot at base of pectoral fin persists throughout life.


  • Up to 60 cm (Length of specimen)

Depth range

  • Depth range data is not yet available.


Similar taxa


©Atlas of Living Australia: Australian distribution

Web resources


References that assist with identification

  • Allen, G., R. Steene, P. Humann and N. Deloach (2003). Reef fish identification: Tropical Pacific New World Publications Inc., Jacksonville, FL, USA.
  • Edgar, G. (2019). Tropical Marine Life of Australia New Holland Publishers, London.
  • Randall, J.E., G.R. Allen and R.C. Steene (1990). Fishes of the Great Barrier Reef and Coral Sea University of Hawaii Press, Honolulu, Hawaii.
  • View all references