Fish Tank Port
From Growtopia
This block is a permanent item that is released on the week of Fishing Pack on September 12, 2015.
In game description
This is a handy hole in a fish tank, through which you can insert or remove fish Use your wrench to manage the fish, just like real fish. You can only place this on a fish tank.
This item can't be spliced.
This item can't be destroyed - smashing it will return it to your backpack if you have room!
This item has special properties you can adjust with the Wrench.
