Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Gobiidae
(Gobies) > Gobiinae
Etymology: occasa: Name from Latin 'occaus' meaning sunset, referring to the distinctive yellow-orange broad wedge-shaped bar at the caudal-fin base on a red body; noun in apposition.
Environment: milieu / climate zone / depth range / distribution range
Marine; benthopelagic; depth range 14 - 20 m (Ref. 94952). Subtropical
Western Pacific: Palau and Japan.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 1.0 cm SL male/unsexed; (Ref. 94952)
Morphology | Morphometrics
soft rays: 8. This species is distinguished by the following characters: lacks all cephalic sensory-canal pores; dorsal/anal fin-ray formula 8/8; some pectoral-fin rays are branched; rudimentary or no fifth pelvic-fin ray; 5 branches in fourth pelvic-fin ray; D1 crossed by two dark bands separated by a diagonal light band, a distinct dark spot on caudal peduncle anterior to caudal fin, followed by a pale bar and a yellow-orange broad wedge-shaped bar at caudal-fin base (Ref. 94952).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Greenfield, D.W., R. Winterbottom and T. Suzuki, 2014. Eviota occasa, a new species of dwarfgoby from Palau and the Ryukyu Islands, Japan. (Teleostei: Gobiidae). J. Ocean Sci. Found. 10:11-19. (Ref. 94952)
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
): 24.2 - 29.4, mean 28.8 (based on 556 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
): 2.9 ±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) .