Actinopteri (ray-finned fishes) > Cichliformes
(Cichlids, convict blennies) > Cichlidae
(Cichlids) > Geophaginae
Etymology: Dicrossus: Greek, di = two + Greek, krossoi = tassel (Ref. 45335); filamentosus: Name probably referring to the caudal streamers of the male; an adjective from Latin 'filamentum' meaning filament (Ref. 86441).
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic; pH range: 5.0 - 7.0; dH range: 5 - 8. Tropical; 23°C - 25°C (Ref. 1672)
South America: Amazon River basin, in the Negro River drainage; Orinoco River basin in from Inírida River in Colombia to Maripa in Venezuela.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.8 cm SL male/unsexed; (Ref. 36377)
Aquarium keeping: in pairs; minimum aquarium size 80 cm (Ref. 51539).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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. 123251)
CITES (Ref. 123416)
Threat to humans
Fisheries: of no interest; aquarium: commercial
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01738 (0.00782 - 0.03863), b=3.04 (2.85 - 3.23), in cm total length, 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. 120179
): High, minimum population doubling time less than 15 months (tm<1; Fec=60-120).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .