Overview

Distribution

Amazon River basin, Uatumã River, Brazil.
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South America: Amazon River basin, Uatumã River in Brazil.
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Physical Description

Morphology

Vertebrae: 35 - 38
  • Merckx, A., M. Jégu and G. Mendes Dos Santos 2000 Une nouvelle espèce de Serrasalmus (Teleostei: Characidae: Serrasalminae), S. altispinis n. sp., décrite du rio uatumã (Amazonas, Brésil) avec une description complémentaire de S. rhombeus (Linnaeus, 1766) du plateau Guyanais. Cybium 24(2):181-201. (Ref. 36224)   http://www.fishbase.org/references/FBRefSummary.php?id=36224&speccode=11970 External link.
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Size

Max. size

19.0 cm SL (male/unsexed; (Ref. 39031))
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Diagnostic Description

distal black stripe on caudal fin; 4 supraneurals before dorsal pterygiophores; height of abdominal serrae 4.4-5.8% of SL, interorbitary distance 8.8-10.1% of SL; body depth 47.4-57.4% of SL; color of lateral body dark; humeral blotch well marked.
  • Merckx, A., M. Jégu and G. Mendes Dos Santos 2000 Une nouvelle espèce de Serrasalmus (Teleostei: Characidae: Serrasalminae), S. altispinis n. sp., décrite du rio uatumã (Amazonas, Brésil) avec une description complémentaire de S. rhombeus (Linnaeus, 1766) du plateau Guyanais. Cybium 24(2):181-201. (Ref. 36224)   http://www.fishbase.org/references/FBRefSummary.php?id=36224&speccode=11970 External link.
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Ecology

Habitat

Environment

pelagic; potamodromous; freshwater
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Migration

Potamodromous. Migrating within streams, migratory in rivers, e.g. Saliminus, Moxostoma, Labeo. Migrations should be cyclical and predictable and cover more than 100 km.
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Conservation

Threats

Not Evaluated
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