Species learning profile
Black pacu
Colossoma macropomum
Black pacu (Colossoma macropomum) is a freshwater fish associated with river habitat in South America. Powerful broad teeth crush nuts and seeds dropped by flooded forests.
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At a glance
- Perairan
- Air tawar
- Habitat
- Sungai
- Panjang maksimum
- 108 cm
- Sebaran
- Amerika Selatan
- Famili
- Serrasalmidae
- Ordo
- Characiformes
Observe
How to identify Black pacu
- Powerful broad teeth crush nuts and seeds dropped by flooded forests.
- Guide context: river habitat in South America.
- Reported maximum length: 108 cm — capable of growing longer than many people are tall. Maximum is not the same as typical adult size.
Field note: color, size, and markings can change with age, sex, season, depth, and lighting. Use several traits together.
Place and pattern
Where it lives—and how it behaves
Habitat and range
This species is associated with river habitat across South America. Flow, seasonal floods, connected side channels, and access to spawning reaches all shape its river habitat.
Behavior
Follows seasonal floods into forests
Food-web connections
What it eats and why it matters
Diet
Fruit, seeds, insects, and zooplankton.
Ecological role
Disperses seeds through Amazon floodplains.
Remember
One fact worth keeping
Black pacu dapat tumbuh hingga sekitar 108 cm dan sering ditemukan di sekitar Sungai.
Think like a conservationist
A conservation lens
River fish depend on connected water. Dams, blocked migrations, pollution, and altered flow can matter even when the channel still looks wet.
This habitat lens is not a current population-status assessment. Status can differ among regions and change as new assessments are published; follow the reference links and local fisheries or wildlife agencies for current decisions.
Recall
Quick knowledge check
Which habitat is most closely associated with Black pacu in this guide?
Keep exploring
References and further reading
Fishdle summarizes stable identification and ecology concepts in plain language. Taxonomy and population knowledge continue to change, so use primary assessments and regional authorities for conservation or management decisions.
Make connections