Actinopteri (ray-finned fishes) > Cichliformes
(Cichlids, convict blennies) > Cichlidae
(Cichlids) > Cichlasomatinae
Etymology: Aequidens: Latin, aequus, equal, equally + Latin, dens, dentis = teeth (Ref. 45335).
More on author: Heckel.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic; pH range: 4.9 - 7.5; dH range: 1 - 13.5. Tropical; 24°C - 26°C (Ref. 1672)
South America: widely distributed in the Amazon River basin in Peru, Colombia, Ecuador, Brazil and Bolivia. Also in the Tocantins and Parnaíba rivers, French Guiana, Suriname, Guyana, and in the Orinoco River basin of Venezuela and Colombia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 19.2 cm TL male/unsexed; (Ref. 125882); max. published weight: 157.00 g (Ref. 125882)
One of the most colorful species of the genus, especially during its reproductive period. Frequently occurs in zones with little current and over a substrate covered with vegetal debris (Ref. 27188). Caught frequently but not abundantly in most varied biotopes- in small creeks and flooded zones with clear, shallow and slow flowing water. Feeds primarily on insects, secondarily on fishes and plants. Very territorial. During reproduction, males attain a deeper coloration. About 1,000 eggs are released during spawning. Spawning takes place on stone or wood. Parents take care of juveniles (Ref. 35237). Maximum length 25 cm TL (Ref. 1672).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Produces a minimum of 1000 eggs (Ref. 1672).
Kullander, S.O. and H. Nijssen, 1989. The cichlids of Surinam: Teleostei, Labroidei. E.J. Brill, Leiden, The Netherlands. 256 p. (Ref. 26372)
IUCN Red List Status (Ref. 125652)
Threat to humans
Fisheries: minor commercial; aquarium: commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02291 (0.01485 - 0.03533), b=3.07 (2.94 - 3.20), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic level (Ref. 69278
): 3.2 ±0.50 se; based on food items.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Fec=1,000).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100).