A 5 gallon fish tank would have to be completely cleaned out at least 3 to 4 times a week as it's really too small to have any fish; it would be great for a few ghost shrimp, or just some live plants instead
You can fit a 5 gallon fish tank on a school going desk.
you can put a betta in a 5 gallon tank
Well, the general rule for keeping fish is that you should have at least one gallon of water per inch of fish. So a 5" fish will need at least a 5 gallon tank.
If the temperature is around 20 degrees (Celcius) probably not. But for a five GALLON fish tank, probably.
Yes,the Oto will clean the puffer's leftovers(puffers are messy eaters)
yes
Water,the fish tank,and alot of room so the fish can have room to swim around in.
The only fish you can keep in a 5 gallon tank is one betta (Siamese fighting fish) on it's own as that is a very small tank.
No
5 milk jugs becase a 5gallon tank is five1 gallon milk jug
About 18.9L for five US gallons.
You can put it on a table if you choose. NEVER put a tank on the floor.