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Piaractus mesopotamicus (Holmberg, 1887)

Pacu
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Piaractus mesopotamicus
Picture by Lovshin, L.


Brazil country information

Common names: Caranha, Pacu, Pacu branco
Occurrence: native
Salinity: freshwater
Abundance: scarce (very unlikely) | Ref: Silvano, R.A.M. and A. Begossi, 2001
Importance: subsistence fisheries | Ref: Silvano, R.A.M. and A. Begossi, 2001
Aquaculture: commercial | Ref: Lovshin, L.L., 1995
Regulations: | Ref:
Uses: live export: yes;
Comments: Found in Piracicaba river (Ref. 50076). Widely farmed in Southern Brazil (Ref. 32894).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/br.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Lovshin, L.L., 1995
National Database:

Common names from other countries

Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

> Characiformes (Characins) > Serrasalmidae (Piranhas and pacus) > Colossomatinae
Etymology: Piaractus: Greek, piar = fat, the side with grease of a body + Greek, aktos , ago = to carry.

Issue
See Géry (1986: 102) for more detail.

Environment: milieu / climate zone / depth range / distribution range Ecologia

; acqua dolce demersale; potamodromo (Ref. 51243).   Subtropical; 15°S - 38°S, 66°W - 42°W

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

South America: Paraguay-Paraná River basin.

Size / Peso / Age

Maturity: Lm ?  range ? - ? cm
Max length : 40.5 cm SL maschio/sesso non determinato; (Ref. 39031); peso massimo pubblicato: 20.0 kg (Ref. 32894)

Short description Chiavi di identificazione | Morfologia | Morfometria

Dark grey to silver dorsally and laterally and white ventrally with a yellow breast.

Biologia     Glossario (es. epibenthic)

Invades the flooded forests to feed on nuts and seeds which fall from trees (Ref. 32894). Reaches around 50.0 cm SL (Ref. 81048).

Life cycle and mating behavior Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve

Assuming standard characid reproduction. Replace ASAP.

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

Lovshin, L.L., 1995. The colossomids. p. 153-159. In C.E. Nash and A.J. Novotny (eds.) World animal science: production of aquatic animals: fishes. Elsevier Science, Amsterdam, The Netherlands. (Ref. 32894)

IUCN Red List Status (Ref. 130435)

  Near Threatened (NT) (A2bcde); Date assessed: 21 December 2020

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

Pesca: commerciale; Acquacoltura: commerciale
FAO(Aquaculture systems: production; ; publication : search) | FishSource |

Informazioni ulteriori

Trophic ecology
Prede
Diet compositions
Food consumptions
Food rations
Predatori
Ecology
Ecologia
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Riproduzione
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Larve
Dinamica popolazioni larvali
Distribution
Stati
Aree FAO
Ecosystems
Presenze
Introduzioni
BRUVS - Videos
Anatomy
Gill areas
Cervelli
Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
Suoni dei Pesci
Diseases / Parasites
Toxicities (LC50s)
Genetics
Genetica
Electrophoreses
Heritabilities
Human related
Aquaculture systems
Profili di acquacoltura
Varietà
Ciguatera cases
Stamps, coins, misc.
Outreach
Collaboratori
References
Bibliografia

Strumenti

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.7500   [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):  2.0   ±0.00 se; based on food items.
Resilienza (Ref. 120179):  Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (39 of 100).
Price category (Ref. 80766):   Unknown.