Teleostei (teleosts) >
Eupercaria/misc (Various families in series Eupercaria) >
Lethrinidae (Emperors or scavengers) > Monotaxinae
Etymology: Gymnocranius: Greek, gymnos = naked + Greek, kranion = skull (Ref. 45335); satoi: Named for Torao Sato, a Japanese ichthyologist.
Eponymy: Professor Torao Sato (d: 1945) is a Japanese ichthyologist with expertise in the Lethrinidae (the family of fishes to which this species belongs). [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; pelagic-neritic; depth range 20 - 40 m (Ref. 107926). Tropical
Distribution
Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
Western Pacific: New Caledonia, West Papua (Raja Ampat), southern Japan and possibly Australia (GBR), the Solomon Sea, Bismarck Sea and New Guinea.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 42.2 cm SL male/unsexed; (Ref. 107926)
Short description
Identification keys | Morphology | Morphometrics
This high-bodied species is distinguished by the following characters: ratio of standard length to body depth between 2.39 and 2.45; bumpy forehead; the lower edge of eye well above axis of body; caudal fin is shallowly forked, the lobes convex on inner side; scale rows above lateral line 6; pored scales on lateral line 47-50; flanks silvery; scales above the lateral line possess a dark-grey basal patch forming longitudinal rows; scales in the three rows below lateral line in middle of flank also forming darker rows, but basal patch not as dark as above lateral line; snout an cheeks with blue speckles against bronze background, distinctive on fresh and larger individuals, but faint on smaller individuals; blue band joining the nostrils on forehead; the area immediately above eye (supraorbital shelf) forming a distinctive brownish to blackish eyebrow; more or less conspicuous vertical dark bar crossing the eye; dorsal, pectoral, anal and caudal fins are reddish to bright vermilion red; upper lip is reddish to red while the lower lip white (Ref. 107926).
Body shape (shape guide): fusiform / normal; Cross section: compressed.
This species apparently lives on the coral sandy bottom in the vicinity of coral reefs (Ref. 107926).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Borsa, P., P. Béarez, S. Paijo and W.-J. Chen, 2013. Gymnocranius superciliosus and Gymnocranius satoi, two new large-eye breams (Sparoidea: Lethrinidae) from the Coral Sea and adjacent regions. Comptes Rendus Biologies 336: 233-240. (Ref. 107926)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Tools
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5005 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01698 (0.00734 - 0.03932), b=2.98 (2.79 - 3.17), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.4 ±0.6 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (41 of 100).
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