Red Bellied Piranha

Pygocentrus nattereri

Red Bellied Piranha is a middle swimmer. Solitary housing is permitted; group housing needs additional context.

AggressiveMiddle swimmerSolitary housing is permitted; group housing needs additional contextIntermediate – Advanced

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Explore compatibility, care or problems using this guide and your aquarium’s conditions.

Quick facts

Adult size: ≤ 13.8" (≤ 35 cm)
Aquarium size: 264 US gal (1000 L) or larger / ≥ 94.5" (≥ 240 cm) minimum length
Care level: Intermediate – Advanced
Temperament: Aggressive
Swimming zone: Middle swimmer
Temperature: 75–82°F (24–28°C)
pH: 5.5–7.5
GH: 2–12 dGH
KH: 2–10 dKH
Diet: Omnivore
Lifespan: up to 12 years
Group behavior: Solitary housing is permitted; group housing needs additional context

Care requirements

Care level: Intermediate – Advanced.

Lifespan: up to 12 years.

Aquarium size and space needs

Minimum aquarium size: 264 US gal (1000 L) or larger / ≥ 94.5" (≥ 240 cm) minimum length. Plan the layout and stocking within that limit.

Water parameters

Suitable water: temperature 24–28 °C, pH 5.5–7.5, GH 2–12 dGH, KH 2–10 dKH.

Temperament and compatibility

Red Bellied Piranha is aggressive and needs carefully selected companions.

Swimming zone and behavior

This fish uses the middle part of the aquarium, so leave enough open swimming space for movement and feeding.

Before adding this fish

Plan for an aquarium of 264 US gal (1000 L) or larger / ≥ 94.5" (≥ 240 cm) minimum length.
Choose other fish carefully around this temperament.
Solitary housing is permitted; group housing needs additional context.
Offer a varied diet suited to this species’ documented feeding habits.

Natural habitat and origin

Origin: Argentina, Brazil, Bolivia, Colombia, Ecuador, Guyana, Paraguay, Peru, Uruguay, Venezuela.

Natural habitat: Main river channels, smaller tributaries and floodplain lakes.

Similar fish profiles

Use these profiles to compare fish with similar care level, size, temperature range, or swimming behavior.

Blackberry Silver Dollar Myloplus schomburgkii Same family Similar care level Same swimming zone Intermediate ≤ 15.7" (≤ 40 cm) 73–81°F (23–27°C) Avacado Pufferfish Auriglobus modestus Similar care level Same temperament Bottom dweller Intermediate – Advanced ≤ 3.9" (≤ 10 cm) 73–82°F (23–28°C) Black Sharkminnow Labeo chrysophekadion Similar care level Same temperament Bottom dweller Intermediate – Advanced ≤ 35.4" (≤ 90 cm) 68–79°F (20–26°C) Bala Shark Balantiocheilos melanopterus Similar care level Same swimming zone Similar diet Beginner – Intermediate ≤ 13.8" (≤ 35 cm) 68–82°F (20–28°C) African Banded Barb Enteromius fasciolatus Similar care level Same swimming zone Similar diet Beginner – Intermediate ≤ 2.4" (≤ 6 cm) 68–79°F (20–26°C) African Butterfly Cichlid Anomalochromis thomasi Similar care level Bottom dweller Similar diet Beginner – Intermediate ≤ 3.1" (≤ 8 cm) 73–81°F (23–27°C)

FAQ

How large does Red Bellied Piranha get?

Red Bellied Piranha reaches ≤ 13.8" (≤ 35 cm). It needs specialist housing, long-term space, strong filtration, and carefully chosen companions.

What aquarium size does Red Bellied Piranha need?

Use an aquarium of at least 264 US gal (1000 L) or larger / ≥ 94.5" (≥ 240 cm) minimum length.

Is Red Bellied Piranha peaceful?

Red Bellied Piranha should be planned cautiously with compatible fish only, because aggressive behavior can limit companion options.

What temperature is suitable for Red Bellied Piranha?

Keep it between 24 to 28 °C.

Should Red Bellied Piranha be kept alone or in a group?

Red Bellied Piranha: Solitary housing is permitted; group housing needs additional context.