Request: Fishtank Capacity 6+

Hi,

Would it be possible to increase the limit of the large fishtanks to hold more than 6 fish?
For example...20 or more?

In TS3 I had a mod that increased the limit to 100 - I know TS4 fish are considerably larger so that wont work, but its so pointless to have a floor-to-wall sized tank for only 6.

Thanks