The Nido 3.1 is a generously sized net breeding box. The advantage of net breeding boxes is that fry and expectant mothers always have access to fresh, clean, and oxygen-rich water. The Nido 3.1 features a double bottom, providing fish with a safe haven in the hours following hatching. Thanks to the removable central divider, you can use the Nido 3.1 to care for two expectant mothers separately until they give birth. The Nido 3.1 is also ideal for isolating sick, aggressive, or stressed fish.