Environment: milieu / climate zone / depth range / distribution range
Ecología
; agua dulce; salobre demersal. Tropical
South America: Galapagos Islands. Apparently endemic to the fresh- and brackishwater of the cave systems on the Santa Cruz Island, where it is replaced by O. deroyi in the marine environment.
Tamaño / Peso / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.8 cm SL macho / no sexado; (Ref. 79893)
Short description
Claves de identificación | Morfología | Morfometría
Radios blandos dorsales (total) : 69 - 74; Radios blandos anales: 54 - 62. This species has the following characters: Dorsal fin rays 69-76, anal fin rays 54-62; outer
pseudoclasper with a long spine-like supporter; inner pseudoclasper very short, anteriorly inclined; opercular spine with a single, sharp tip; cheeks naked; body not pigmented; upper preopercular pore absent; caudal fin rays 11-12 (Ref. 57883).
Uncommon species (Ref. 34024). Inhabits rocky crevices; cave species (Ref. 27297).
Life cycle and mating behavior
Maturities | Reproducción | Spawnings | Egg(s) | Fecundities | Larva
Møller, P.R., W. Schwarzhans and J.G. Nielsen, 2005. Review of the American Dinematichthyini (Teleostei: Bythitidae). Part II. Ogilbia. aqua, J. Ichthyol. Aquat. Biol. 10(4):133-207. (Ref. 57883)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Pesquerías: sin interés
Herramientas
Special reports
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Fuentes de Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [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).
Nivel trófico (Ref.
69278): 3.3 ±0.5 se; based on size and trophs of closest relatives
Resiliencia (Ref.
120179): Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (Assuming Fec < 100).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).