Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 0 - 2 m (Ref. 30874). Tropical; 30°N - 22°S
Pacific: Ryukyu Is. to the Great Barrier Reef, east to New Caledonia, Fiji, Tonga, Palau, Kiribati, and the Marshall Islands.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 2.5 cm SL male/unsexed; (Ref. 559)
Morphology | Morphometrics
soft rays: 8 - 9. Characterized by having blackish spots on cheek; fully united pelvic fins forming disc; rounded caudal fin, about equal to head length; absence of scales and head pores; tricuspid jaw teeth, enlarged outer row; depth of body 6.0 in SL (Ref. 90102); body green with red dorsal, anal, and caudal fins; SL to 25 mm (Ref. 1602).
Intertidal, actively shuttling back and forth between rock pools and air (Ref. 31184). Feeds on algae and crustaceans. Tolerates a wide range of temperature and salinity (Ref. 1602). Breathes air when out of water (Ref. 31184).
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. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 25.2 - 29.3, mean 28.6 °C (based on 1180 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00955 (0.00454 - 0.02011), b=3.05 (2.88 - 3.22), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 2.7 ±0.32 se; based on food items.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .