Environment: milieu / climate zone / depth range / distribution range
Freshwater; pelagic; pH range: 6.0 - 7.0; dH range: ? - 10; depth range - m (Ref. ), usually - m (Ref. ). Tropical; 24°C - 28°C (Ref. 1672)
South America: Amazon River basin, Apeú River, Pará State, Guyana, Suriname, and western Orinoco River basin.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 18.0 cm TL male/unsexed; (Ref. 111518); max. published weight: 70.50 g (Ref. 111518)
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Vari, R.P. and S.J. Raredon, 2003. Chilodontidae (Headstanders). p. 85-86. 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. 37477)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5664 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01202 (0.00462 - 0.03130), b=3.01 (2.79 - 3.23), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 2.8 ±0.26 se; based on food items.
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .