Black Carp Fish Seed refers to the juvenile or immature stages of the black carp (Mylopharyngodon piceus) that are used for stocking fish in ponds, lakes, or rivers or for aquaculture production. This is a species of freshwater fish that is native to East Asia and is widely cultivated in various parts of the world for its meat and eggs. Black carp fish seed is usually produced by the artificial breeding of mature black carp.