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The Colossoma Brachypomum - Red Pacu (4-5cm) is a high-performance biological asset, engineered for massive structural presence and extreme metabolic reliability in large-scale freshwater systems. Characterized by its robust, deep-bodied profile and high-contrast red ventral pigmentation, this 4-5cm variant is a masterclass in Amazonian megafauna design. In the "Answering Machine" era of specialized freshwater husbandry, the Red Pacu is a premier choice for enthusiasts managing high-volume, predatory, or mega-community displays that require significant biomass and architectural scale.
Unlike smaller characins, C. brachypomum is a high-velocity grower that rapidly transitions from its juvenile "piranha-mimic" phase to a powerful, herbivore-leaning giant. This is a technical specimen that requires a disciplined long-term management strategy to accommodate its expansive structural profile.
Note: Images shown are stock images and not the actual fish you will receive.
Visualization Note: Some product imagery utilizes generative AI to provide a high-fidelity representation of a mature specimen’s architectural profile. These are not photos of the specific individual you will receive, as biological variance is a standard in high-end husbandry.
Care Level: Easy to Moderate (Due to size requirements)
Temperament: Peaceful (but highly active and large)
Variant Size: 4-5cm
Minimum Tank Size: 250+ Gallons (Mature)
Diet: Omnivore (Primarily Herbivorous/Frugivorous)
Reef Compatible: N/A (Freshwater)
Max Size: 24 to 30+ Inches
Temperature: 72° to 82°F
dKH: 2 to 15
pH: 6.0 to 7.8
The Red Pacu requires a stable freshwater environment with specific structural considerations to support its rapid growth:
Structural Layout: Minimize sharp or delicate decor. Mature specimens are powerful and can easily displace or damage standard aquarium fixtures. Focus on large, smooth driftwood and open horizontal swimming lanes to facilitate high-velocity movement.
Swimming Lanes: Massive open space is a non-negotiable requirement. This species is highly active and requires significant volume to maintain skeletal and muscular health.
Filtration: Extreme-capacity filtration is mandatory. As a high-metabolism consumer, the Pacu produces a massive bioload; maintaining pristine water quality is key to long-term structural integrity.
Despite their visual similarity to piranhas, Red Pacus are remarkably peaceful and integrate well with other robust residents such as large Cichlids, Arowanas, and large catfish. However, their sheer size and activity level can overwhelm smaller or more passive tank mates. Avoid housing with any fish small enough to be viewed as an accidental food source during high-energy feeding sessions.
Success with Colossoma brachypomum hinges on a varied nutritional protocol. While they are omnivorous, they require a heavy concentration of vegetable matter, including high-quality sinking pellets, fruits (grapes/apples), and blanched vegetables. Supplement with high-protein snacks like shrimp or krill occasionally to maintain peak metabolic function. Regular 30-50% weekly water changes are the primary success factor for managing the massive waste production of these giants.
We utilize specialized logistics for national Overnight Delivery to ensure livestock arrives in peak condition. Every order is packed using professional-grade insulation and climate-contingent heat or ice packs to maintain stable temperatures throughout the journey. This protocol is strictly designed to minimize transport stress and ensure a technical transfer from our facility to your tank with zero compromise on health or vitality.
The Colossoma Brachypomum - Red Pacu (4-5cm) is a high-performance biological asset, engineered for massive structural presence and extreme metabolic reliability in large-scale freshwater systems. Characterized by its robust, deep-bodied profile and high-contrast red ventral pigmentation, this 4-5cm variant is a masterclass in Amazonian megafauna design. In the "Answering Machine" era of specialized freshwater husbandry, the Red Pacu is a premier choice for enthusiasts managing high-volume, predatory, or mega-community displays that require significant biomass and architectural scale.
Unlike smaller characins, C. brachypomum is a high-velocity grower that rapidly transitions from its juvenile "piranha-mimic" phase to a powerful, herbivore-leaning giant. This is a technical specimen that requires a disciplined long-term management strategy to accommodate its expansive structural profile.
Note: Images shown are stock images and not the actual fish you will receive.
Visualization Note: Some product imagery utilizes generative AI to provide a high-fidelity representation of a mature specimen’s architectural profile. These are not photos of the specific individual you will receive, as biological variance is a standard in high-end husbandry.
Care Level: Easy to Moderate (Due to size requirements)
Temperament: Peaceful (but highly active and large)
Variant Size: 4-5cm
Minimum Tank Size: 250+ Gallons (Mature)
Diet: Omnivore (Primarily Herbivorous/Frugivorous)
Reef Compatible: N/A (Freshwater)
Max Size: 24 to 30+ Inches
Temperature: 72° to 82°F
dKH: 2 to 15
pH: 6.0 to 7.8
The Red Pacu requires a stable freshwater environment with specific structural considerations to support its rapid growth:
Structural Layout: Minimize sharp or delicate decor. Mature specimens are powerful and can easily displace or damage standard aquarium fixtures. Focus on large, smooth driftwood and open horizontal swimming lanes to facilitate high-velocity movement.
Swimming Lanes: Massive open space is a non-negotiable requirement. This species is highly active and requires significant volume to maintain skeletal and muscular health.
Filtration: Extreme-capacity filtration is mandatory. As a high-metabolism consumer, the Pacu produces a massive bioload; maintaining pristine water quality is key to long-term structural integrity.
Despite their visual similarity to piranhas, Red Pacus are remarkably peaceful and integrate well with other robust residents such as large Cichlids, Arowanas, and large catfish. However, their sheer size and activity level can overwhelm smaller or more passive tank mates. Avoid housing with any fish small enough to be viewed as an accidental food source during high-energy feeding sessions.
Success with Colossoma brachypomum hinges on a varied nutritional protocol. While they are omnivorous, they require a heavy concentration of vegetable matter, including high-quality sinking pellets, fruits (grapes/apples), and blanched vegetables. Supplement with high-protein snacks like shrimp or krill occasionally to maintain peak metabolic function. Regular 30-50% weekly water changes are the primary success factor for managing the massive waste production of these giants.
We utilize specialized logistics for national Overnight Delivery to ensure livestock arrives in peak condition. Every order is packed using professional-grade insulation and climate-contingent heat or ice packs to maintain stable temperatures throughout the journey. This protocol is strictly designed to minimize transport stress and ensure a technical transfer from our facility to your tank with zero compromise on health or vitality.
