Provided the tank is heated and filtered and you do a regular 50% water change every week I would suggest you have a couple of Guppies or Platys to a total of not more than 4 inches in body length.
You can fit a 5 gallon fish tank on a school going desk.
you can put a betta in a 5 gallon tank
Any tank that is at least 5 litres (1 gallon) in size, NO LESS.
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
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.