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: ancora: Name from the Latin 'ancora' meaning hooked; referring to the distinctive orange hook-shaped marking on the side of the head; an adjective.. More on author: Greenfield.
Environment: milieu / climate zone / depth range / distribution range
Marine; pelagic-neritic; depth range 6 - 14 m (Ref. 86696). Subtropical
Western Pacific: Japan (Ryukyu Islands); Indonesia and underwater photographs from the Philippines.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 1.4 cm SL male/unsexed; (Ref. 86696)
Morphology | Morphometrics
soft rays: 7. This species is distinguished from its congeners by following set of characters: cephalic sensory-pore system pattern group 2 (lacking only IT pore); dorsal/anal fin-ray formula 8/7; pectoral-fin rays simple; 5th pelvic-fin ray 10% of 4th; no distinct dark marks on body; scales not strongly pigmented; caudal fin with 5 irregular bands of circles of dark chromatophores crossing the fin; live or fresh specimens with a hook-shaped orange mark on side of the head (Ref. 86696).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Greenfield, D.W. and T. Suzuki, 2011. Two new goby species of the genus Eviota from the Ryukyu Islands, Japan (Teleostei: Gobiidae). Zootaxa 2812:63-68. (Ref. 86696)
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
): 20.5 - 26.3, mean 23.3 (based on 102 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00891 (0.00427 - 0.01860), b=3.08 (2.91 - 3.25), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.0 ±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) .