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Teleostei (teleosts) > Gobiiformes (Gobies) > Gobiidae (Gobies) > Gobionellinae
Etymology: Stenogobius: Greek, stenos = narrow + Latin, gobius = gudgeon (Ref. 45335); alleni: Named in honor of Gerald R. Allen for his contributions to the freshwater ichthyology of Papua New Guinea.
Eponymy: Dr Gerald Robert ‘Gerry’ Allen (d: 1942) is an American-born Australian ichthyologist. [...] (Ref. 128868), visit book page.

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; brackish; demersal. Tropical

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Oceania: New Britain Island, Bismarck Archipelago, Papua New Guinea.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 3.7 cm SL male/unsexed; (Ref. 34009); 3.9 cm SL (female)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 7; Dorsal soft rays (total): 11; Anal spines: 1; Anal soft rays: 11. Small and elegant, vertical trunk bars very faint in both sexes; first dorsal fin in males with short bars on membrane that do not appear as scribbles; second dorsal fin similarly marked; first dorsal fin in females with midlateral band and dusky margin, second dorsal with dusky spots forming two rows on membrane; predorsal midline with 2 to 18 scales, usually fully scaled, but may be with naked patches; belly anteriorly naked close to pelvic base; breast naked. Smallest species of the genus known.

Inhabits freshwater streams.

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Watson, R.E., 1991. A provisional review of the genus Stenogobius with descriptions of a new subgenus and thirteen new species (Pisces: Teleostei: Gobiidae). Rec. West. Aust. Mus. 15(3):627-710. (Ref. 34009)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Data deficient (DD) ; Date assessed: 19 February 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00977 (0.00444 - 0.02153), b=3.04 (2.85 - 3.23), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.3 ±0.5 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.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Stenogobius alleni Watson, 1991