Fish Tank is a splicable background which was added on September 11, 2015 during the Fishin' Pack Update. 10 of them can also be obtained from the said pack for 10,000 gems. It is used to store that you have caught. Fish may be inserted or removed via a Fish Tank Port.
- If your graphic settings are lowered, the fish may become invisible.
- Fish Tank is commonly referred by players as ftanks.