Adjustable & Stable: This aquarium breeding box has a suction cup to keep it stable and stable without any diagonal.Non-slip suction cups, good adhesion, and difficult to fall off. Attaches firmly to the aquarium box and does not move through water flow.MULTI-FUNCTIONAL: This aquarium divider is convenient for breeding tropical fish and isolating weakly fish due to injuries.Tropical fish can be used not only in aquariums but also in aquariums where reptiles and amphibians.It can isolate aggressive fish from weak fish, newborn mint and other fish to increase the survival rate of fish.