Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 1 - 15 m (Ref. 90102). Tropical; 25°N - 24°S, 105°E - 154°E
Western Pacific: Japan (Yaeyama Islands), Palau, Philippines, and Indonesia; east to Papua New Guinea, Vanuatu and New Caledonia; south to Australia (Great Barrier Reef).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.5 cm SL male/unsexed; (Ref. 48637)
soft rays: 8 - 10. Characterized by translucent with broad red to brown, internal midlateral stripe from head to caudal fin base; 3-5 white to yellowish spots posteroventrally above base of anal fin; caudal fin base with presence of diagnostic black hour-glass shaped mark; all pectoral rays unbranched; longitudinal scale series 22-24; ctenoid scales, none on head, nape and base of pectoral fin; separated pelvic fins, thin membrane joining bases; fourth pelvic ray with 4-9 branches; depth of body 5.0-5.6 in SL (Ref. 90102).
Inhabits clear coastal reefs and protected outer reef coral habitats. Usually at moderate depths of 10 meters or more, swimming near sponges or corals when feeding on plankton (Ref. 48637). Hovers in groups above branching corals of protected reefs (Ref. 9710).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Myers, R.F., 1991. Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 27.1 - 29.3, mean 28.7 (based on 1396 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00300 - 0.01455), b=3.08 (2.90 - 3.26), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.3 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .