Black-spot Piranha (cariba) Care Guide
Pygocentrus cariba is a powerful Orinoco piranha with a black shoulder spot, a carnivorous schooling predator that requires a large tank and a meaty diet.
Compiled by Aquairi from published sources · Published · Updated
Overview
Pygocentrus cariba is a piranha of the family Serrasalmidae, sometimes called the black-spot piranha for the dark humeral marking behind the gill cover. FishBase gives a maximum size of about 27.9 cm total length. It is a deep-bodied, laterally compressed predator restricted to the Orinoco system.
Taxonomy
- Family: Serrasalmidae
- Genus: Pygocentrus
- Scientific name: Pygocentrus cariba (Humboldt, 1821)
Habitat
FishBase and Wikipedia place the species in the Orinoco River basin lowlands and the Llanos region of Venezuela and Colombia. It is a pelagic, tropical freshwater fish of large rivers and floodplains.
Tank requirements
- Minimum tank volume: 400 L
- Temperature: 24-28 °C (75-82 °F)
- pH: 6.0-7.5
- GH: 4-18 °dGH
- Group size: 5 or more, as it is naturally schooling
- Lifespan: 10-20 years
- Use a large, well-filtered tank with a secure lid and few decorations
Diet
Wikipedia describes Pygocentrus cariba as a carnivore feeding on a wide variety of fish, carrion, invertebrates and other aquatic animals. In the aquarium it should receive meaty foods such as whole fish, shrimp and prepared carnivore diets; feeding mammalian meat is discouraged. Live feeder fish carry disease risk and are not necessary.
Compatibility
This is an aggressive, mid-water predator best kept in a species group of its own kind rather than with unrelated tankmates. Small fish will be eaten, and human hands should be kept clear during maintenance. Conspecific aggression can occur, so a large tank and ample group size help spread tension.
Conservation status
IUCN Red List: Least Concern (assessed 2020).
Black-spot Piranha (Pygocentrus cariba) Breeding Guide
Overview
Pygocentrus cariba, the black-spot piranha, belongs to the family Serrasalmidae and is restricted to Venezuela and Colombia, specifically the Orinoco River basin lowlands and the Llanos region, reaching a total length of about 27.9 cm (Wikipedia). It is a carnivorous, schooling piranha. Species-specific spawning data are limited, so the genus pattern is given below with an explicit note.
Sexing
Reliable external sexing characters for P. cariba were not present in the opened sources; piranhas of this genus are difficult to sex visually outside the breeding season.
Breeding Setup
No species-specific captive setup for P. cariba is documented in the opened sources. Based on the genus Pygocentrus pattern, well-documented in the related red-bellied piranha (P. nattereri), males construct shallow nests about 4-5 cm deep dug among water grasses, so a spacious aquarium with areas of dense planting provides suitable spawning substrate (Wikipedia).
Spawning Behavior & Trigger
In the genus (documented for P. nattereri), reproduction is rainfall-triggered, with adults selecting flooded marginal grasses for spawning; pairs perform nuptial swimming displays and the female lays several thousand adhesive eggs onto water plants, to which the eggs stick (Wikipedia). This genus pattern is applied here as P. cariba-specific data were not located.
Egg & Fry Care
Following the genus pattern documented for P. nattereri, both parents guard the nest and young, the eggs hatch within two to three days, and juveniles hide among the plants until large enough to defend themselves (Wikipedia).
Common Challenges
Captive breeding requires a very large tank to accommodate an aggressive schooling predator, replication of a rainfall-style trigger, and dense marginal planting for nest building; note that the detailed spawning data here derive from the genus pattern (P. nattereri) rather than from P. cariba-specific records.