Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; pelagic. Tropical; 7°S - 15°S, 46°W - 34°W
South America: western South Atlantic drainage, Brazil (Sao Francisco River; the records from Rio Grande do Norte and Rio Preta need to be checked).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.8 cm SL male/unsexed; (Ref. 189)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 0; Anal spines: 0; Anal soft rays: 17 - 22. Body fairly slender, moderately compressed. Snout moderate, a little less than eye diameter; maxilla moderate, tip bluntly rounded, failing to reach pre-operculum by about 1/2 pupil diameter; gill cover canals of walkeri-type. Anal fin moderate, its origin just behind base of last dorsal fin ray. A silver stripe along flank.
Occurs in middle reaches of rivers. More data needed.
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae
Spawn in school (Ref. 205).
Whitehead, P.J.P., G.J. Nelson and T. Wongratana, 1988. FAO Species Catalogue. Vol. 7. Clupeoid fishes of the world (Suborder Clupeoidei). An annotated and illustrated catalogue of the herrings, sardines, pilchards, sprats, shads, anchovies and wolf-herrings. FAO Fish. Synop. 125(7/2):305-579. Rome: FAO. (Ref. 189)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Tools
Special reports
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00537 (0.00253 - 0.01141), b=3.13 (2.96 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).