Environment: milieu / climate zone / depth range / distribution range
Ecologie
; zoet water; brak water demersaal. Tropical; 25°C - 33°C (Ref. 36880)
North to South America: Pacific slope of California, USA to Peru and at the Galapagos Islands.
Grootte / Gewicht / Leeftijd
Maturity: Lm ? range ? - ? cm
Max length : 44.0 cm SL mannelijk / geslacht onbekend; (Ref. 12193); common length : 25.0 cm TL mannelijk / geslacht onbekend; (Ref. 12193)
Inhabits rivers of low to high current velocity and stagnant waters between sea level and 100 m elevation, generally occurs in freshwaters but sometimes in slightly brackish river mouths. More abundant near the coast and only large individuals are found upstream. Benthic species that lies waiting for prey, shrimps and fish under stones or overhanging shorelines (Ref. 36880).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Bussing, W.A., 1998. Peces de las aguas continentales de Costa Rica [Freshwater fishes of Costa Rica]. 2nd Ed. San José Costa Rica: Editorial de la Universidad de Costa Rica. 468 p. (Ref. 36880)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2024-1)
Gevaar voor de mens
Harmless
Gebruik door de mens
Tools
Speciale rapporten
Download XML
Internetbronnen
Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00493 - 0.01469), b=3.12 (2.97 - 3.27), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.9 ±0.65 se; based on food items.
Weerstandsvermogen (Ref.
120179): laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (41 of 100).
