Pirarucu

Arapaima gigas

Arapaima gigas (Pirarucu)
Taxonomy
    • Osteichthyes
      • Osteglossiformes
        • Osteoglossidae
          • Arapaima gigas
Habitat
Temperature:
S24.0-31.0 °C
Salinity:
Sfresh water
Photoperiod:
S12-13 h
Substrate:
Syes
Trophic level:
Not investigated by FEB yet.
Growth
Length:
Not investigated by FEB yet.
Weight:
Not investigated by FEB yet.
Maturity:
S2.0-5.0 years
Malformations:
No data found yet.
Morphology:
Not investigated by FEB yet.
Swimming
Home range:
S0.4-400 ha
Depth:
S1.4-5.2 m
Speed:
Not investigated by FEB yet.
Migration:
Spotamodromous
Type:
Not investigated by FEB yet.
Reproduction
Nest building:
Syes
Courtship:
No data found yet.
Mating type:
Smonogamy
Fecundity:
Not investigated by FEB yet.
Brood care:
Syes
Social behaviour
Aggregation:
Sdepends
Organisation:
Not investigated by FEB yet.
Aggression:
Syes
Handling
Farming frequency:
2,131 t/year 2018
Farming stress:
Syes
Slaughter protocol:
Sno

Farming remarks

Arapaima gigas
Li1  ❘  Po3  ❘  Ce2

Arapaima gigas is a carnivorous fish that naturally inhabits the lowland with slow-flowing waters of the Amazon River basin in South America, occurring in Brazil, Colombia, Ecuador, Guyana, and Peru. It is a long-living species with parental care – especially by males – often referred to as one of the largest freshwater fishes of the world. It was already introduced to Bolivia, China, Cuba, Mexico, Philippines, Singapore, and Thailand, but the main producer is still Brazil. A. gigas has great economic and cultural importance, presenting some characteristics which are advantageous for aquaculture, such as the best growth rate among the Amazonian farmed fish species, a great tolerance to handling and ammonia concentrations, a fillet with no intramuscular bones, and a mild flavour. This fish is also tolerant to low dissolved oxygen levels due to its obligatory aerial breathing. A. gigas is harvested as JUVENILES and is commercialised mainly as fillet. The active fishing has reduced its population size and the occurrence of large individuals over the years, especially around the populated regions of the Amazon. Because this fish appears in the CITES II section (strictly regulated and controlled commerce), its aquaculture development must rely solely on spontaneous reproduction in captivity. Further research about home range, density of aggregation, and aggression in the wild is still needed. Moreover, nothing is known about a possible high-standard slaughter method for this species or the malformation rates under farming conditions.





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