Note - Fancy goldfish have a distorted digestive system, so thus they need food which is low in protein, starch and sugar as they get older.

Gulping air at the same time as it eats the food can result in serious digestive disorders. When feeding Goldfish pellets or flakes, do not feed it floating on the surface, it must sink before it's safe for the Goldfish to eat it. They will also benefit from occasional live foods like worms, snails, small insects and aquatic plants (e.g. spinach, collard, mustard, turnip, kale), squash, etc. shrimp, oysters, crab, clams for protein and vegetables such as peas, green beans, lima beans (butter beans), greens (e.g. Select fresh foods that are low in starches and sugars, e.g. Both Otos and Corys have spines, poisonous in Corys, which can cause them to get lodged in the throat of larger fish, including Goldfish, causing the death of both.Дiet Goldfish are omnivores and should be fed a balanced diet that includes fresh foods.

Otos can develop a taste for a Goldfish's slime coat, as can many other suckermouth catfish and Loaches, but both these types of fish can also be eaten by Goldfish. Other Catfish such as Otos and Corydoras also do NOT make good tank mates. This will harm the Goldfish and leave it open to infections and parasites. Common Plecos are NOT good tankmates for Goldfish as Plecos are not only tropical fish but have a difficult time getting enough to eat and, given they are nocturnal, they may also latch onto Goldfish while they are sleeping. Fancy Goldfish should NOT be mixed with Common/Comet type Goldfish for this reason, a Common type is capable of injuring or even killing a Fancy, as well as out competing it to food. Tank compatibility It is generally recommended to keep Goldfish in a species only tank as they can be bullies, nippy or victims to other fish as they are slow moving and the Fancies are delicate due to their stunted and deformed bodies. It is only possible to sex Goldfish when they are mature (over a year old) and usually only when it's their breeding season, which is in the springtime (although it has been known for some fish to show signs at other times of year). Females may have rounder convex vents while males have thinner concave vents.

Sexing Males develop breeding tubercles on their gill covers and on the leading ray of their pectoral fins. The Goldfish was selectively bred for color, body type, shape, and other traits, from Crucian Carp over hundreds of years and is now considered it's own different species. Origin Goldfish are ornamental fish and not found in wild waterways, unless they have been introduced. Additional names Fantail Goldfish, Common Goldfish, Comet Goldfish, Shubunkin, Fancy Goldfish Additional scientific names Carassius auratus auratus

Different kinds of telescope goldfish