Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin; eau douce; saumâtre démersal; amphidrome (Ref. 51037); profondeur 1 - 1000 m (Ref. 58302). Tropical; 30°N - 25°S, 140°E - 160°W
Oceania: Mariana Islands south to Vanuatu, New Caledonia and Fiji.
Longueur à la première maturité / Taille / Poids / Âge
Maturité: Lm ?, range 7 - ? cm
Max length : 24.5 cm SL mâle / non sexé; (Ref. 26668); 16.5 cm (female)
Benthic (Ref. 58302). Adults occur from lowland streams and rivers to relatively swift streams at elevations of 1000 m. They often burrow into the substrate with only the eyes showing; feed on filamentous algae, worms, crustaceans, various insects and insects larvae, and suspended food particles; has been long favored as food by the early Hawaiians (Ref. 44091). Larvae develop and metamorphose in the marine zooplankton and as juveniles, about 161 days old, recruit to freshwater streams, where they undergo rapid growth and morphological changes necessary for upstream migration to the adult habitat (Ref. 51037).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Adults move downstream to their prime breeding just above the estuary; males select crevices and caves formed by rocks on the stream bed where the females will lay their eggs; males guard nests until larvae hatch a day later (Ref. 44091).
Watson, R.E., 1992. A review of the gobiid fish genus Awaous from insular streams of the Pacific Plate. Ichthyol. Explor. Freshwat. 3(2):161-176. (Ref. 26668)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Température préférée (Réf.
123201): 9.2 - 23.2, mean 15.6 °C (based on 54 cells).
Indice de diversité phylogénétique (Réf.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00575 - 0.02188), b=3.13 (2.97 - 3.29), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Niveau trophique (Réf.
69278): 2.2 ±0.1 se; based on diet studies.
Résilience (Réf.
120179): Milieu, temps minimum de doublement de population : 1,4 à 4,4 années (Assuming tm=1-2 and Fec<1000).
Vulnérabilité de la pêche (Ref.
59153): Low vulnerability (11 of 100).
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