Blackline Costae Tetra

The Costae Tetra (Blackline variant) is a sleek and active freshwater tetra, recognized for its shimmering silver body highlighted by a distinct horizontal black stripe. Native to South American river systems, this species is a great choice for community aquariums, offering constant movement and subtle elegance.

The Costae Tetra (Blackline variant) is a sleek and active freshwater tetra, recognized for its shimmering silver body highlighted by a distinct horizontal black stripe. Native to South American river systems, this species is a great choice for community aquariums, offering constant movement and subtle elegance. Water Parameters: Temperature: 24–28°C pH: 5.5–7.2 TDS: 80–200 ppm Water Type: Soft to moderately soft, slightly acidic preferred Filtration: Moderate flow with stable conditions Water Changes: 20–25% weekly Care & Maintenance: Blackline Costae Tetras are hardy and adaptable, making them suitable for both beginners and experienced aquarists. They thrive in well-planted aquariums with open swimming space and gentle lighting. Keeping them in groups of at least 6–10 enhances their schooling behavior and reduces stress. Provide a balanced diet of high-quality flakes, micro pellets, and occasional live or frozen foods for optimal health and coloration. Compatibility: These tetras are peaceful and do well in community tanks with other non-aggressive species. Ideal tank mates include other tetras, rasboras, dwarf cichlids, and peaceful bottom dwellers. Avoid aggressive or fin-nipping fish, as this may stress the group and disrupt their natural behavior. With proper care and stable water conditions, Blackline Costae Tetras are active, attractive, and reliable additions to any freshwater aquarium setup.