Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Characiformes (Characins) >
Serrasalmidae (Piranhas and pacus) > Colossomatinae
Etymology: Mylossoma: Greek, mylo = mill + Greek, soma = body (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; pelagic. Tropical
South America: Bolivia, Brazil, Colombia, Peru and Venezuela (widespread across the Amazon and Orinoco river basins).
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 24.2 cm SL male/unsexed; (Ref. 117280)
Short description
Identification keys | Morphology | Morphometrics
Vertebrae: 36 - 37. This species differs from M. aureum by having the last abdominal spine reaching the anal-fin origin or almost (vs. last abdominal spine clearly separated from anal-fin origin); vertebrae 36-37 (vs. 38-39), and with a distinct black blotch on the opercle (vs. no blotch or faded on the opercle); differs from M. duriventre, M. unimaculatum by having branched anal-fin rays 31, rarely 30-38 (vs. 26-32); differs from M. unimaculatum by having circumpeduncular scales 28-36 (vs. 34-40) and perforated scales 74-99 (vs. 95-110) (Ref. 117280).
Reported to be an herbivore with tendency for omnivory, feeding on fruits, seeds and larvae of aquatic insects and commonly occurs at whitewater rivers and associated floodplain lakes and channels. Spawning period is reported to be relatively long, with two spawning peaks during the flood season. It is one of the most important species in commercial fisheries in the Brazilian Amazon (Ref. 117280).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Mateussi, N.T.B., C. Oliveira and C.S. Pavanelli, 2018. Taxonomic revision of the Cis-Andean species of Mylossoma Eigenmann & Kennedy, 1903 (Teleostei: Characiformes: Serrasalmidae). Zootaxa 4387(2):275-309. (Ref. 117280)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Fisheries: highly commercial
Tools
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02455 (0.01070 - 0.05632), b=3.00 (2.80 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 2.6 ±0.3 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 (20 of 100).
