Guide to goldfish breeding: spawning conditions, egg management, fry selection criteria, and line maintenance.
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Guide to goldfish breeding: spawning conditions, egg management, fry selection criteria, and line maintenance.
Goldfish breeding combines the joy of spring spawning with the art and science of selective culling to maintain breed quality.
Temperature 18-22C after a cold winter period. 12-14 hours of light. Mature adults (2+ years) in good nutrition.
Transfer spawning material to separate containers. Add dilute methylene blue for fungus prevention. Maintain gentle aeration. Remove white infertile eggs promptly. Hatching takes ~5 days at 20C.
First cull (2-3 weeks): Remove deformities and breed-inappropriate features. Second cull (1-2 months): Select for body shape and fin form, keeping 20-30%. Third cull (3+ months): Evaluate color development and breed characteristics, keeping 5-10%.
Outcross with unrelated same-breed fish every 3-5 generations to maintain vigor.
Bri-Choku breeders offer breeding pairs with known genetics and selection history.
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