• Scientific Name : Carassius auratus
• Common Names and Types : Calico Veiltail, Comet, Black Moor, Bubble eye, Lionhead, Ranchu, Oranda, Pearl Scale, Ryukin, Panda, Fantail, Shubunkin (calico), Tosakin, Orange Fantail, Black Fantail, Pompon, Celestial, Telescope, etc. There are many different varieties of this fish out there with more being developed.
• Care Level : Common varieties are easy and good for the freshwater aquarium fish beginner who is willing to perform the frequent water changes required in smaller setups. Some of the fancy varieties can be slightly more difficult to care for and need more stable water conditions and high quality foods. See the summary above.
• Size : Usually 3 to 5 inches (8 - 13 cm), but can get bigger
• pH : 6 - 7.5
• Temperature : 40°F - 80°F (5°C - 27°C)
• Water Hardness : 5° to 20° dH,
• Tank Region : All over the tank
• Goldfish Lifespan : 10 - 30 years
• Origin / Habitat : China originally, then Japan, Asia and the rest of the world.
• Temperament / Behavior : Very peaceful

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.

Gender

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: 6 to 7 cm