Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Cichlidae
(Cichlids) > Geophaginae
Etymology: Biotoecus: Greek, biotos, ou = life, existence + Greek, oikos = house, habitat (Ref. 45335); dicentrarchus: Named for the 2 anal fin spines, Greek prefix 'di' for two and nouns 'kentron' for spine and 'archos' for vent; noun in apposition (Ref. 86446). More on author: Kullander.
Environment / Climate / Range
Freshwater; benthopelagic. Tropical, preferred ?
South America: Orinoco River basin, from the Inírida River (Colombia) to Maripa, (Venezuela)
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.8 cm SL male/unsexed; (Ref. 36377)
(total): 7 - 8;
soft rays: 6 - 8. This species is distinguished from all other cichlids by having only two (vs. three or more) anal spines; differs from B. opercularis by lacking anguloarticular lateralis canal; 3 or 4 (vs. 5) skin openings and 2 or 3 (vs. 4) canal fragments representing the dentary lateralis canal; dorsal fin with slightly prolonged anterior spines and lappets; modal dorsal fin count VII.15 (vs. VIII.14); and 6 (vs. 5) dark spots along the middle of the side (Ref. 86446).
The type locality was a shallow laguna about 25 m wide, with transparent water, vegetation resembling needlegrass; water temperature 34°C; associated with another cichlid species,
Crenicara filamentosum, the dominant species at the locality (Ref. 86446).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Eggs are deposited at the ceiling of a cave; the female tends to eggs and yolk-sac larvae; both parents care for the free-swimming young (Ref. 42051).
Kullander, S.O., 2003. Cichlidae (Cichlids). p. 605-654. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36377)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00794 (0.00309 - 0.02040), b=3.14 (2.91 - 3.37), based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.1 ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Assuming Fec<1000).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .