Specifications: Made of premium plastic material, it is durable and has a long service time. It has self-floating and suction cup design and double-layer combination can save space for you. This fish breeding box is a great separating incubator for pregnant fish like betta or guppies. The fish isolation box can protect new born fry from being eaten or attacked and improve the survival rate of newborn fish. As a versatile isolation box, it can effectively provides isolation for small fish, shrimp, etc, especially for aggressive fish or injured fish. Meanwhile, this transparent fish tank creates a safe and secure breeding nursery for small fry while monitors your baby fish easily. Transparent plastic cover ensures that fish will not jump out and escape. Item Name: Fish Breeding Box Material: PS Plastic Features: Multifunctional, Isolation Box, Self-floating and Suction Cup Design, Double-layer Type S Size: 8cm x 7cm x 11cm/3.15" x 2.76" x 4.33" (Approx.) Type L Size: 10cm x 7cm x 13cm/3.94" x 2.76" x 5.12" (Approx.) Type XL Size: 18cm x 8.5cm x 15.5cm/7.09" x 3.35" x 6.10" (Approx.)(with an Oxygen Inlet) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Fish Breeding Box Made of premium plastic material, it is durable and has a long service time. It has self-floating and suction cup design and double-layer combination can save space for you. This fish breeding box is a great separating incubator for pregnant fish like betta or guppies. The fish isolation box can protect new born fry from being eaten or attacked and improve the survival rate of newborn fish. As a versatile isolation box, it can effectively provides isolation for small fish, shrimp, etc, especially for aggressive fish or injured fish.