Actinopteri (ray-finned fishes) > Gobiiformes
(Gobies) > Gobiidae
(Gobies) > Gobiinae
Etymology: Amblyeleotris: Greek, amblys = darkness + The name of a Nile fish, eleotris (Ref. 45335); masuii: Named after Mr. M. Masui who collected the type specimens.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 12 - 35 m (Ref. 90102). Subtropical
Southwest Pacific: Okinawa-jima, Ryukyu Islands, Okinawa Prefecture (Japan).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 11.0 cm SL male/unsexed; (Ref. 48637); 6.1 cm SL (female)
Morphology | Morphometrics
soft rays: 13. Characterized by pale grey color; ventral surface of body whitish; four brown bars on body; head with irregular brown reticulations and in pale spaces between bars; brown bar across operculum; narrow brown bar under eye; narrow brown band behind eye; head with scattered blue spots/streaks; pelvic fins united by low membrane at base of fins; without median predorsal scales; side of nape with scales extending forward above middle of opercle; longitudinal scale series 92-97; greatest depth of body 7.1-8.5 in SL; lanceolate caudal fin, longer than head length (Ref. 90102).
Inhabits coastal to outer reef sand slopes to 40 meters depth (Ref. 48637). Specimens collected from sandy bottom at 35 m depth (Ref. 26157).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Aonuma, Y. and T. Yoshino, 1996. Two new species of the genus Amblyeleotris (Pisces: Gobiidae) from the Ryukyu Islands, Japan. Jap. Ichthyol. Res. 43(2):161-168. (Ref. 26157)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 20.6 - 29, mean 27.9 °C (based on 108 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00617 (0.00277 - 0.01371), 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
): 3.4 ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (24 of 100) .