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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.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bentopelagisk. Tropical
Oceania: Futuna Island. Endemic (Ref. 75883 and also Ref. 87775).
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 6.0 cm SL hane/ej könsbestämd; (Ref. 87775); 2.9 cm SL (female)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 7; Mjukstrålar i ryggfenan (totalt) : 9 - 10; Taggstrålar i analfenan: 1; Mjukstrålar i analfenan: 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).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
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)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
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Harmless
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Resiliens (Ref.
120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Sårbarhet i fisket (Ref.
59153): Low vulnerability (10 of 100).
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