FATPET Aquarium Accessory - Hang-on Nursery Fish Tank with Dual Isolation Breeding Hatchery Incubation Box Double layer combination does not occupy a space. Ideal as maturation tank for fry, or isolation tank for aggressive or injured fish Multi-purpose nursery safely separates newborn fry from mother and other fish. Package Include: 1 x separable fish hatchery, 2 x suction-cups,1 x dual-V-shape center partition 1 x top cover.The suction-cups have two different color Measure: S 6.5cm X 9.5cm x 12cm / 2.5" x 3.5" x 4.7"