You’re looking for a care guide for F1 Wild Altum Angelfish. These beautiful fish, being first-generation offspring of wild-caught individuals, require specific care to thrive. Here’s a breakdown of their needs: Here’s a breakdown of their needs: 1. Water Parameters: Temperature: Maintain a warm temperature range of 82°F to 90°F (28°C to 32°C). One source notes that while they can survive at lower temperatures, growth and feeding may be reduced. pH: Keep the pH between 4.8 and 6.2. Hardness: Ensure very soft water conditions, up to 5°H (0-18°N). A possible range of 1-5 dGH is also mentioned. Water Quality: These fish are highly sensitive to water quality, requiring regular water changes (25% to 30% weekly) and efficient, but gentle, filtration. 2. Tank Setup: Tank Size: A minimum of 75 gallons is recommended for a small group, with larger tanks being better, especially considering their size and the need for vertical space. Substrate: Use fine sand or smooth gravel. Decor: Provide ample vertical space with driftwood, rocks, and plants. Floating plants can help diffuse light. Lighting: Dim lighting is preferred. 3. Diet and Feeding: Omnivorous: Offer a varied diet including high-quality flakes, pellets, and live or frozen foods like mosquito larvae and bloodworms. Transitioning: Wild-caught individuals may need to be started on live foods before accepting prepared options. Feeding Schedule: Young fish need to be fed more frequently than adults. 4. Tank Mates: Peaceful: Generally peaceful but can be territorial. Suitable Companions: Larger, peaceful species such as certain tetras, rasboras, non-aggressive cichlids, Corydoras catfish, and dwarf cichlids are suitable. Avoid: Avoid small fish that could be eaten and aggressive species. Some sources suggest avoiding fin-nipping fish. 5. Other Important Notes: Not for Beginners: Their specific requirements make them unsuitable for novice aquarists. Social Behavior: Keeping them in groups of 5 or more is recommended to reduce aggression and encourage natural behavior. Breeding: Breeding them in captivity is challenging. In summary, F1 Altum Angelfish require a large, tall aquarium with soft, acidic, and warm water. They need pristine water quality and a varied diet. Due to their specific needs, they are best suited for experienced aquarists.