That is entirely up to you.
Here are some things that may affect that decision.
1. Size of the fish you will keep.
2. Larger tanks are actually easier to maintain than smaller tanks because there is more water to dilute pollutants.
3. Space.
You would need at least a 150 gallon tank
how much does a leopard shark cost and how big of a tank will you need for it.
Not really big but at least 30cms
not very big, in fact only about 15cm deep, and 7cm wide, because even if you get them a big tank, they will only stay in that size area
A pond works better..
I galon is equal to about 8 pounds. So you would need a 12,518 gallon tank.
You must get the tank maxed with coins first [125] or 40 fish in the tank, then you will get a large tank icon, and you need to get friends to help.
a large one.
20-30 gallons for a single anole.
Two full grown red eared sliders will need at least a 25 gal. tank if not more.
It depends what kind of turtle it is.Some turtles do not need water and can be kept in a room,or big area.
Tetras thrive in a tank that is at least 10 gallons in size, but ideally, a tank size of 20 gallons or larger is recommended for them to thrive.