Actinopteri (ray-finned fishes) > Characiformes
(Characins) > Ctenoluciidae
Etymology: Boulengerella: From George Albert Boulenger (1858-1937); he revised the works of Günther about Percoidei (Ref. 45335).
More on authors: Spix & Agassiz.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; pelagic. Tropical
South America: Rio Amazonas, Rio Tocantins, Río Orinoco, Essequibo River, Oyapock River [= Rio Oiapoque] and rivers of Amapá, and Pará, Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 88.0 cm FL male/unsexed; (Ref. 40637); max. published weight: 6.0 kg (Ref. 54653)
soft rays: 9 - 11;
Vertebrae: 48 - 49. The location of the dorsal fin base distinctly anterior to the vertical through the anal fin origin distinguishes this species from all ctenoluciids except B. lucius and B. xyrekes, from which it can be distinguished by the discrete black spot on the basal portions of the caudal fin rays, and also by different pigmentation on the body.
Usually inhabits areas with rapid water, always on the surface, behind obstacles like rocks and logs (Ref. 54653). Some small-sized individuals occur in calmer waters such as lakes, small bays (Ref. 54653). Solitary or forms small schools (Ref. 54653). A carnivorous fish with preference on fish (Ref. 54653).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Vari, R.P., 1995. The Neotropical fish family Ctenoluciidae (Teleostei: Ostariophysi: Characiformes): supra and intrafamilial phylogenetic relationships, with a revisionary study. Smithson. Contri. Zool. No. 564, 97 p. (Ref. 13118)
IUCN Red List Status (Ref. 125652)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5391 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00251 (0.00130 - 0.00485), b=3.15 (2.97 - 3.33), in cm total length, based on LWR estimates for species & Subfamily-BS (Ref. 93245
Trophic level (Ref. 69278
): 4.5 ±0.80 se; based on food items.
Fishing Vulnerability (Ref. 59153
): High vulnerability (59 of 100) .
Climate Vulnerability (Ref. 125649
): (0 of 100) .