Issue
The dark spots occurring on most scales of the light colored body, usually appearing black or brown, easily identify this species. The type locality for C. callolepis is given as Amazon, the syntypes are aquarium specimens. The type localities for C. nattereri range from Óbidos on the lower Amazon to the mouth of the Rio Negro on the middle Amazon River, possibly overlapping localities. Examination of the types of both indicate C. callolepis to be a synonym of i>C. nattereri. It occurs in the lower to middle Amazon to the Rio Negro then up that river and into the upper Orinoco basin and from the headwater regions of the Rio Branco in Guyana. Eschmeyer, 1998:1156; Géry, 1977:142.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic; pH range: 5.8 - 7.5; dH range: ? - 25. Tropical; 23°C - 27°C (Ref. 13371)
South America: lower Amazon, Negro, and upper Orinoco River basins.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 4.5 cm SL male/unsexed; (Ref. 37104)
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae
Weitzman, M. and S.H. Weitzman, 2003. Lebiasinidae (Pencil fishes). p. 241-251. 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. 37104)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Fisheries: minor commercial; aquarium: commercial
Tools
Special reports
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00327 - 0.01336), b=3.03 (2.85 - 3.21), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trophic level (Ref.
69278): 3.4 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).