Breeding Goldfish / Mating / Reproduction
Not very common in home aquariums but you can try. Make sure you are ready to deal with the babies before you start your breeding program. Give them a water temperature between 75°F and 80°F. Get them ready by feeding fish food high in protein and make sure that they have good water quality. When they are ready, they will lay their eggs on vegetation on the bottom of the tank. You will have to remove the adult fish to prevent them from eating the eggs which usually hatch within 7 days. Prepare your fry foods such as infusoria and brine shrimp and have it ready in time to feed the baby goldfish.
Minimum Tank Size
Preferably a 20 gallon or larger and 10 gallons for each additional goldfish if kept in groups.
Goldfish Tank Mates
Usually do better when kept with other goldfish. Other potential tank mates include white cloud mountian minnows and similar cold water species. Watch closely if you introduce different species to your tank though and be prepared to remove them if it's not working out.
Disease / Illness
Freshwater Fish Disease - Diagnose, Symptoms and Treatment - Unfortunately, they can be quite susceptible to swimbladder problems due to the various types or varieties that have been produced over the years. Ich or white spot disease and fungus problems are also frequently encountered.
Fish Food / Diet
Will gladly accept most fish foods, including flakes, live and freeze dried varieties. There are foods made specifically for goldfish like this: Repashy Goldfish Food. They are omnivorous, which means that they will eat foods of plant or animal origin.
Males may have small white spots called tubercles around their gill areas when ready to spawn. Females may be noticeably larger when swelling with eggs and the males may start to chase the females around the tank.
Buy Size: 3 to 4 cm