Environment / Climate / Range
Ecology
Marine; reef-associated; depth range 0 - 40 m (Ref. 107299). Tropical, preferred ?; 30°N - 30°S
Western Pacific: Japan (Ryukyu and Ogasawara islands), Taiwan, the Philippines and south to Australia and Norfolk Is.; east to Vanuatu, Fiji, Wallis and Futuna, Tonga and Samoa, including Palau, Guam and Marshall Islands in Micronesia.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 2.3 cm SL male/unsexed; (Ref. 1602)
Short description
Morphology | Morphometrics
Dorsal
spines
(total): 7;
Dorsal
soft rays
(total): 8-9;
Anal
spines: 1;
Anal
soft rays: 7 - 8. This species is distinguished by the following characters: complete cephalic sensory-canal pore system (pattern 1); the fifth pelvic-fin ray 10-40% (usually 20%) of fourth ray; some pectoral-fin rays are branched; dorsal/anal-fin formula 9/8; presence of a prominent occipital spot; dorsal midline of body with a series of small dark spots along the dorsal-fin bases; dark bars present crossing the nape in advance of dorsal fin; caudal-peduncle depth 13.4-14.9% SL (Ref. 107299).
Inhabits tide pools of exposed seaward reefs (Ref. 37816), usually in high-tide splash zones and at shallow depths (Ref. 107299).
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. 109396)
CITES (Ref. 94142)
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: of no interest
More information
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
Age/SizeGrowthLength-weightLength-lengthLength-frequenciesMorphometricsMorphologyLarvaeLarval dynamicsRecruitmentAbundance
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
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Estimates of some properties based on models
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00891 (0.00419 - 0.01894), b=3.07 (2.90 - 3.24), 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) .
