Not necessarily

1. The body shape and color of ornamental fish are mainly determined by their own genetic factors, but at different stages of fish growth, their body color is also constantly changing. . The most significant of these is that there is a "color change period" in which body color changes significantly from juvenile to semi-adult stages of goldfish and koi. This period is a critical period for the formation of fish quality. If fed properly and managed properly, , can make the body shape and color of the fish more perfect, and its ornamental value and commercial value can be improved to a higher level.

Parrot fish (scientific name: Amphilophus), also known as parrot fish, parrot fish, scientific name is Roselle neckfin fish, a genus of Wrasses family, commonly known as parrot fish, parrot fish, red wedge sea bream etc., are tropical fish that live in coral reefs. It is so named because of its bright colors and beak shape that resembles that of a parrot. There is also a freshwater ornamental fish bred from the cross between the American cichlid male red manta ray and the purple fire mouth