Large Breeder Box: Size: 3.95" L x 2.77" W x 5.1" H. The fish breeding box is an ideal haven for vulnerable fry, shrimp, and small fish. Effectively protect newborns from being eaten or attacked by other tank mates. Perfect for 10-40 gallon aquariums 2 Versatile Chambers: The removable funnel-like divider creates up to 2 separate rooms. The upper half can isolate aggressive or sick fish, and the lower space makes an ideal fry hatchery. Enjoy a peaceful tank with a higher fish survival rate Self-Floating Design: The hatching box always stays afloat in the tank. It can also be secured to the tank wall using the 2 attached suction cups. You can fully disassemble it for thorough cleaning and maintenance when needed Safe Reliable: Include a cover with two 0.55-inch holes. It practically prevents fish from jumping out while allowing for easy feeding. And the side vents on the isolation box ensure smooth water flow all the time Robust Clear: Made of strong plastic, the fish breeder won?t warp or crack easily. The high transparency enables you to monitor fish behavior and breeding activities without any barriers, bringing you endless enjoyment Product description