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The term painted fish refers to ornamental aquarium fishes which have been artificially coloured to appeal to consumers. This artificial colouring, also known as juicing, is achieved by a number of methods, such as injecting the fish with a hypodermic syringe containing bright fluorescent colour dye, dipping the fish into a dye solution, or feeding the fish dyed food.
This process is usually done to make the fish a brighter colour and more attractive to consumers. The colouring of the fish is not permanent, and usually fades away in six to nine months. Painted fishes commonly found in the aquarium trade include Indian glassy fish, black tetra, oscar, Corydoras catfish and parrot cichlid.
