Mosquitofish
The adult male western mosquitofish grows to 4 cm and the female to 7 cm. It has a round tail fin. It eats algae, insects, and other invertebrates. It can eat more than its own body weight every day. It can live in water that is twice as salty as seawater. It can live in water as hot as 43°C. The western mosquitofish usually has 60 eggs at a time, but it can have as many as 300 at a time. The eggs stay inside the female's body until they hatch.