Alfie Pet by Petoga Couture - Juno Hang-on Nursery Fish Tank with Isolation Breeding Hatchery Dimension: 6.25" long; 3" wide and 3.25" high. Ideal as maturation tank for fry, or isolation tank for aggressive or injured fish. Removable dual-V-shape center partition provides maximum protection and allows two pregnant fish to be safely isolated. Space saving design that hangs on the inside of the aquarium.