Environment: milieu / climate zone / rango de profundidad / distribution range
Ecología
marino; agua dulce; salobre demersal; anfidromo (Ref. 51037); rango de profundidad 1 - 1000 m (Ref. 58302). Tropical; 30°N - 25°S, 140°E - 160°W
Oceania: Mariana Islands south to Vanuatu, New Caledonia and Fiji.
Length at first maturity / Tamaño / Peso / Age
Madurez: Lm ?, range 7 - ? cm
Max length : 24.5 cm SL macho / no sexado; (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).
Life cycle and mating behavior
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
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)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Herramientas
Special reports
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Fuentes de Internet
Estimates based on models
Preferred temperature (Referencia
123201): 9.2 - 23.2, mean 15.6 °C (based on 54 cells).
Phylogenetic diversity index (Referencia
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00573 - 0.02198), b=3.11 (2.95 - 3.27), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Nivel trófico (Referencia
69278): 2.2 ±0.1 se; based on diet studies.
Resiliencia (Referencia
120179): Medio, población duplicada en un tiempo mínimo de 1.4-4.4 años (Assuming tm=1-2 and Fec<1000).
Fishing Vulnerability (Ref.
59153): Low vulnerability (11 of 100).
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