Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Gobiidae
(Gobies) > Gobionellinae
Etymology: Gobionellus: Diminutive of Latin, gobius = gudgeon (Ref. 45335). More on author: Pallas.
Environment: milieu / climate zone / depth range / distribution range
Marine; freshwater; brackish; demersal; amphidromous (Ref. 46888). Tropical; 11°C - 29°C (Ref. 97140); 37°N - 36°S, 98°W - 34°W
Western Atlantic: USA (Virginia) to southern Brazil; occasionally taken as far north as Great Bay estuary, New Jersey; including Mississippi Sound, Gulf of Mexico off Port Aransas, Texas; the muddy coast of French Guiana and especially common along the lower Cayenne River.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 15.4 cm SL male/unsexed; (Ref. 55435); 14.9 cm SL (female); common length : 4.7 cm TL male/unsexed; (Ref. 12193)
soft rays: 13 - 14. This species differs from its congeners by the following characters: mouth terminal and oblique; most distinct pigmentation, a large blotch on trunk located anterodorsally beneath pectoral fin; opercle with a triangular patch; pectoral-fin base with a blotch; second dorsal-fin 14 elements, anal fin with 15 elements; dorsal fins separate; adults with small ctenoid scales covering trunk and nape, 57-89 scales in a lateral series; upper jaw with several rows of teeth; first gill arch with 8 thin rakers on ceratobranchial, 1at the angle, and 6 or 7 on epibranchial (Ref. 55435).
Adults are found on shallow mud or mud-sand bottoms in turbid and generally brackish water near estuaries (Ref. 13628). Also encountered in weedy backwaters (Ref. 7251) and hyper-saline waters (Ref. 13628) with salinity ranging from 0.15 to 37.2 ppt (Ref. 97140).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Pezold, F., 2004. Redescriptions and synonymies of species of the American-west African genus Gobionellus (Teleostei: Gobiidae) with a key to species. Copeia 2004(2):281-297. (Ref. 55435)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 118484)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 23.3 - 28.1, mean 27.2 °C (based on 932 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00550 (0.00315 - 0.00957), b=2.99 (2.84 - 3.14), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic level (Ref. 69278
): 3.5 ±0.4 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 to moderate vulnerability (30 of 100) .