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Teleostei (teleosts) > Gobiiformes (Gobies) > Gobiidae (Gobies) > Sicydiinae
Etymology: Akihito: Named for Emperor Akihito for his many contributions to goby systematics and phylogenetic research; futuna: Named for its lype locality, Futuna Island; noun in apposition.
Eponymy: Emperor Akihito of Japan (d: 1933) is noted for his many contributions to goby systematics and phylogenetic research. [...] (Ref. 128868), visit book page.

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

Freshwater; benthopelagic. Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Oceania: Futuna Island. Endemic (Ref. 75883 and also Ref. 87775).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 6.0 cm SL male/unsexed; (Ref. 87775); 2.9 cm SL (female)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 7; Dorsal soft rays (total): 9 - 10; Anal spines: 1; Anal soft rays: 9 - 10. Species distinguished by females having 4-7 closely set, slightly flexible tricuspid premaxillary teeth and 2-4 canine-like teeth at the tips of the premaxilla; adult males with 4-7 premaxillary fixed recurved conical to canine-like teeth; females with 19-20 scales along lateral midline; small tongue, rounded and mostly free from floor of mouth anteriorly; pelvic disc fused to belly between fifth rays only (Ref. 75883).

Occurs in swift clear streams with rocky bottom; collected at an altitude of 147 m. Observed to swim in open water and are not always on the bottom of the river. Although feeding habits have not been studied, a few examined specimens apparently feed on aquatic insects and crustaceans (Atyidae) (ref. 75883).

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

Main reference Upload your references | References | Coordinator | Collaborators

Keith, P., G. Marquet and R.E. Watson, 2008. Akihito futuna, a new species of freshwater goby from the South Pacific (Gobioidei: Sicydiinae). Cybium 31(4):471-476. (Ref. 75883)

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

Critically Endangered (CR) (B1ab(ii,iii)); Date assessed: 23 August 2011

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

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Trophic ecology
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Internet sources

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).

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).

Akihito futuna Keith, Marquet & Watson, 2008