Environment: milieu / climate zone / distribuzione batimetrica / distribution range
Ecologia
; acqua dolce; salmastro demersale. Tropical; 25°C - 33°C (Ref. 36880)
North to South America: Pacific slope of California, USA to Peru and at the Galapagos Islands.
Size / Peso / Age
Maturità: Lm ? range ? - ? cm
Max length : 44.0 cm SL maschio/sesso non determinato; (Ref. 12193); common length : 25.0 cm TL maschio/sesso non determinato; (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).
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
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)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
Strumenti
Special reports
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Fonti Internet
Estimates based on models
Phylogenetic diversity index (Fonte Biblio.
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).
Trophic level (Fonte Biblio.
69278): 3.9 ±0.65 se; based on food items.
Resilienza (Fonte Biblio.
120179): Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (41 of 100).
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