Actinopteri (ray-finned fishes) > Gobiiformes
(Gobies) > Gobiidae
(Gobies) > Gobionellinae
Etymology: Eugnathogobius: Greek, eu = good + Greek, gnathos = jaw + Latin, gobius = gudgeon (Ref. 45335).
More on author: Fowler.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal. Tropical
Asia: Singapore, Thailand, Malaysia, Brunei and Indonesia (Ref. 43716). Recorded from Myanmar (Ref. 81818).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 4.0 cm TL male/unsexed; (Ref. 12693)
(total): 6 - 7;
soft rays: 6;
Vertebrae: 10 - 17. Distinguished by the following characteristics: robustly built with second dorsal and anal rays always I, 6; pectoral rays 16-19; longitudinal scales 22-24; TRB 7-9; predorsal scales 6-8, large, reaching close up to behind eyes; preopercular pores absent, posterior portion of oculoscapular canal absent; scales on body mostly ctenoid; third spine of dorsal fin usually longest, but not elongate; head and body pale with margins of scales outlined in brown, row of brown midlateral blotches, three diagonal dark streaks on head and vertically barred caudal fin (Ref. 80545).
Known only from freshwater habitats, including blackwater streams; found syntopically with Pseudogobiopsis ologactis (Ref. 80545). Occurs in lowland floodplain canals. Feeds on insects and other invertebrates (Ref. 12693). Adult females are about 1.0 cm smaller than males. Reported gravid female at 2.0 cm SL (from Kapuas River) with numerous eggs, 0.20 mm diameter, while gravid female at 2.29-2.43 cm SL (from Singapore) had noticeably smaller eggs, 0.15 mm diameter (Ref. 2091).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Larson, H.K., 2009. Review of the gobiid fish genera Eugnathogobius and Pseudogobiopsis (Gobioidei: Gobiidae: Gobionellinae), with descriptions of three new species. The Raffles Bulletin of Zoology 57(1):127-181. (Ref. 80545)
IUCN Red List Status (Ref. 125652)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00724 (0.00335 - 0.01567), b=3.05 (2.87 - 3.23), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.2 ±0.40 se; based on food items.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100).