Guppy

guppy male with female

guppy also known as the million fish is the most popular (fancy) fish

guppy sizes

Guppies vary in size depending on their gender. Male guppies are typically 1.5–4 cm (0.6–1.6 inches) long, while female guppies are generally 3–7 cm (1.2–2.8 inches) long.