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Teleostei (teleosts) > Eupercaria/misc (Various families in series Eupercaria) > Lethrinidae (Emperors or scavengers) > Monotaxinae
Etymology: Gymnocranius: Greek, gymnos = naked + Greek, kranion = skull (Ref. 45335).

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; demersal; non-migratory; depth range 50 - 100 m (Ref. 2295). Tropical; 35°N - 25°S

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Indo-West Pacific: east Africa and Seychelles to the Solomon Islands, north to southern Japan, south to northern Australia.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 35.0 cm TL male/unsexed; (Ref. 2295); common length : 25.0 cm TL male/unsexed; (Ref. 2295)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 10; Dorsal soft rays (total): 10; Anal spines: 3; Anal soft rays: 10.

Inhabits sandy or low-relief rocky bottoms (Ref. 11228). Feeds on bottom-living invertebrates. Marketed fresh (Ref. 9775). May be solitary or in small groups, on flat offshore trawling grounds, occasionally near shallow coral reefs (Ref. 90102).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Carpenter, K.E. and G.R. Allen, 1989. FAO Species Catalogue. Vol. 9. Emperor fishes and large-eye breams of the world (family Lethrinidae). An annotated and illustrated catalogue of lethrinid species known to date. FAO Fish. Synop. 125(9):118 p. Rome: FAO. (Ref. 2295)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 28 June 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: minor commercial

FAO - Publication: search | FishSource |

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Estimates based on models

Preferred temperature (Ref. 123201): 23.2 - 28.2, mean 26.7 °C (based on 312 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01778 (0.00761 - 0.04154), b=2.97 (2.78 - 3.16), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.4 ±0.41 se; based on food items.

Resilience (Ref. 120179): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (25 of 100).

Price category (Ref. 80766): High.

Gymnocranius elongatus Senta, 1973