Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 3 - 20 m (Ref. 90102). Tropical; 8°N - 18°S
Western Pacific: Japan, Palau, Federated States of Micronesia, Guam and Northern Mariana Islands, Vietnam, Indonesia; south to Rowley Shoals in the Timor Sea, Papua New Guinea, and Solomon Islands.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 2.1 cm SL male/unsexed; (Ref. 1602)
soft rays: 6 - 7. Characterized by dark purplish brown body color with three white spots anteriorly on middle of side; presence of series of small white spots beginning on nape, continuing along base of dorsal fin and ending on dorsal surface of caudal peduncle; caudal fin base with red-edged black spot; iris reddish; first four dorsal spines elongate or filamentous in male; all pectoral rays unbranched; longitudinal scale series 21-23; ctenoid scales, absent on head, nape and pectoral fin base; separated pelvic fins, thin membrane joining bases; well developed fifth pelvic ray, 50-70% length of fourth ray; 3-6 branches of fourth pelvic ray; depth of body 3.6-5.0 in SL (Ref. 90102).
Inhabits silty sheltered reefs (Ref. 1602). Reported to be associated with the mushroom Heliofungia actiniformis (Ref. 91291).
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
): 27.6 - 29.4, mean 28.8 (based on 934 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
): 3.1 ±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) .