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.
Fish Tank Port price in Growtopia: sells for about 25/WL (median of 13 offers from community Discords, past 30 days). Live price chart and the latest buy and sell offers.
Recently sold at: YOML, 518V