Characidae - Roeboides occidentalis Meek & Hildebrand 1916



SOURCE FOR OCCURRENCE IN ECUADOR: Many sources for the occurrence of this species in Ecuador (e.g., Eigenmann, 1922; Barriga, 2012; Jimenez et al., 2015).
ORIGINAL DESCRIPTION: Meek, S.E., and S.F. Hildebrand. 1916. The fishes of the fresh waters of Panama. Field Museum of Natural History, Publications, Zoölogical Series v. 10 (no. 15): 1-374, Pls. 6-32.
TYPE SPECIMENS: Holotype: FMNH 8948 (listed as lost by Maldonado-Ocampo et al., 2005)
TAXONOMIC STATUS: Valid (Eschmeyer and Fricke, 2013).
RANGE ECUADOR: Rio Verde drainage (and likely rivers north of the Rio Verde) and Santiago-Cayapas drainages in northwestern Ecuador (Jimenez et al., 2015).
RANGE OUTSIDE OF ECUADOR: Pacific drainages in Panama and Colombia (Eigenmann, 1922; Fishbase, 2013).
COLLECTIONS IN ECUADOR:
MAXIMUM SIZE: 130 mm SL (Fishbase, 2013).
DISTINGUISHING FEATURES: This is a small to medium size tetra, that possesses a long anal fin and can have a relatively deep body anteriorly. A dark blotch is often present on the side of the body. Maldonado-Ocampo et al. (2005) list the following meristic counts for Colombian specimens: 5-8 gill rakers on the the upper branch and 10-12 in the lower branch of the first gill arch; dorsal fin i-9; anal fin iv-v, 40-51; 71-80 lateral line scales; 16-20 scales along a dorsal series.
ECOLOGY: Gery (1977) indicates that species in this genus tend to have scale eating habits. Maldonado-Ocampo et al. (2005) list the following items from the stomachs of specimens collected in the San Juan River (Puerto Pizario) of Colombia: shrimp, scales, terrestrial insects in the family Libelulidae, worms, plant material (seeds), and aquatic beetles from the family Helmidae.
ECONOMIC IMPORTANCE: NA.
CONSERVATION STATUS: NA.
LINK TO FISHBASE PAGE: Click here for link
SPECIES PROFILE CREATED BY: Windsor Aguirre
SPECIES PROFILE CONTRIBUTORS: Fredy Nugra, Pedro Jimenez




Created: July 5, 2013
Last Updated: August 20, 2018
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