With this Fish Tank Separator with 4 Suction Cups, you can divide your tank into multiple compartments! You can choose from 3 colors! This tank separator is very useful when breeding fish or when you have to separate certain breeds of fish such as betta. It has multiple holes on it so the water can flow freely from one subdivision to another. Also, it is of plastic material which won’t corrode even as you submerge it in water. Finally, it comes with suction cups which you can use to mount it on the tank glass.