Pengaruh Pemberian Ekstrak Lada Hitam Dengan Dosis Berbeda Melalui Perendaman…

Abstract Guppy fish (Poecilia reticulata) is a popular ornamental fish in both local and foreign markets. Male guppies have a thinner body form and more colorful body color and fins than female guppies, leading in a stronger demand for male guppy goods. To accommodate the huge demand, black pepper extract is being used to masculinize guppy fish. This study used an experimental procedure with…