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The Hyphessobrycon Callistus - Longfin Serpae Tetra (Standard) is a high-performance architectural specimen, engineered for deep chromatic saturation and distinctive fin-geometry in technical freshwater systems. Characterized by an intense, fiery-red body profile and elongated, flowing finnage, this Longfin variant is a masterclass in biological contrast. In the "Answering Machine" era of specialized freshwater husbandry, the Longfin Serpae is prized for its extreme hardiness and its ability to provide a high-velocity, high-impact presence in community or planted setups.
Unlike the standard-fin variety, the Longfin specimen offers a more sophisticated silhouette, contributing to the visual verticality of the water column. It is an active, robust forager that provides a constant display of alert, disciplined movement.
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
Temperament: Semi-Aggressive (Active / Nippy)
Variant Size: Standard
Minimum Tank Size: 20 Gallons
Diet: Omnivore
Reef Compatible: N/A (Freshwater)
Max Size: 1.75 Inches
Temperature: 72° to 82°F
dKH: 2 to 15
pH: 5.0 to 7.8
The Longfin Serpae Tetra requires a stable freshwater environment with structural elements to manage its high-energy behavior:
Structural Layout: Dense background planting and driftwood are mandatory to break lines of sight and provide security. This allows the specimen to display its deepest red saturation.
Swimming Lanes: Provide open horizontal space for schooling, but ensure the perimeter is well-planted to prevent social stress.
Flow: Moderate, gentle flow is preferred to accommodate the elongated finnage and prevent exhaustion.
This is a social, high-energy schooling species. To maintain social stability and minimize nipping behavior, they must be kept in groups of 6 or more. They are semi-aggressive and may nip at slow-moving or long-finned species (such as Bettas, Gouramis, or Angelfish). Pair with robust, fast-moving community residents like larger Barbs, Danios, or other active Tetras.
Success with Hyphessobrycon callistus hinges on a varied nutritional protocol. They are high-metabolism foragers and should be fed twice daily with high-quality flakes and micro-pellets. Supplement with frozen bloodworms and brine shrimp to maintain peak color saturation and immune function. Regular 25% weekly water changes are the primary success factor for maintaining the water quality these active tetras demand.
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 Hyphessobrycon Callistus - Longfin Serpae Tetra (Standard) is a high-performance architectural specimen, engineered for deep chromatic saturation and distinctive fin-geometry in technical freshwater systems. Characterized by an intense, fiery-red body profile and elongated, flowing finnage, this Longfin variant is a masterclass in biological contrast. In the "Answering Machine" era of specialized freshwater husbandry, the Longfin Serpae is prized for its extreme hardiness and its ability to provide a high-velocity, high-impact presence in community or planted setups.
Unlike the standard-fin variety, the Longfin specimen offers a more sophisticated silhouette, contributing to the visual verticality of the water column. It is an active, robust forager that provides a constant display of alert, disciplined movement.
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
Temperament: Semi-Aggressive (Active / Nippy)
Variant Size: Standard
Minimum Tank Size: 20 Gallons
Diet: Omnivore
Reef Compatible: N/A (Freshwater)
Max Size: 1.75 Inches
Temperature: 72° to 82°F
dKH: 2 to 15
pH: 5.0 to 7.8
The Longfin Serpae Tetra requires a stable freshwater environment with structural elements to manage its high-energy behavior:
Structural Layout: Dense background planting and driftwood are mandatory to break lines of sight and provide security. This allows the specimen to display its deepest red saturation.
Swimming Lanes: Provide open horizontal space for schooling, but ensure the perimeter is well-planted to prevent social stress.
Flow: Moderate, gentle flow is preferred to accommodate the elongated finnage and prevent exhaustion.
This is a social, high-energy schooling species. To maintain social stability and minimize nipping behavior, they must be kept in groups of 6 or more. They are semi-aggressive and may nip at slow-moving or long-finned species (such as Bettas, Gouramis, or Angelfish). Pair with robust, fast-moving community residents like larger Barbs, Danios, or other active Tetras.
Success with Hyphessobrycon callistus hinges on a varied nutritional protocol. They are high-metabolism foragers and should be fed twice daily with high-quality flakes and micro-pellets. Supplement with frozen bloodworms and brine shrimp to maintain peak color saturation and immune function. Regular 25% weekly water changes are the primary success factor for maintaining the water quality these active tetras demand.
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.
