Actinopteri (ray-finned fishes) > Gobiiformes
(Gobies) > Gobiidae
(Gobies) > Gobiinae
Etymology: Eviota: No etymology given, suggested by Christopher Scharpt: from Latin 'eu' for 'true' and 'iota' for anything very small, in combination 'truly very small' referring to it as being the smallest vertebrate at the time it has benn described by Jenkins (thus, making the suggestion by Scharpt plausible.. More on authors: Jordan & Seale.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 0 - 40 m (Ref. 107299). Tropical; 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)
Morphology | Morphometrics
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 shallow waters, often including tide pools of exposed seaward reefs (Ref. 37816, 116739), 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. 123251)
CITES (Ref. 123416)
Threat to humans
Fisheries: of no interest
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 24.7 - 29.3, mean 28.3 °C (based on 1537 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00871 (0.00415 - 0.01826), b=3.07 (2.90 - 3.24), in cm total length, 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. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .