Definately not in the plural form. A 10 gal tank in use only holds around 8 gals or so. 1 Piranha would be over maximum capacity.. The basic rules are. 1 inch of fish needs at least 1 gallon of water (a Piranha is about a 10 inch fish) Every tank must have a permanently running cycled filter. Every tank needs at least 50% of its water replaced every week.
if they are babies... if they are adults they need a 20 gallon tank. you will need to give them more height then floor space
YES
You can put 3 mice in a 10 gallon tank. It is best to not put 4 mice because the ventilation will not be enough and will smell horrible and possibly cause distress to the mice.
Yes but a big enough tank so about 10-15 gallon tank so the all are separate from each other
Danios or glofish would be a good fish to put in the tank. They are schooling fish which means you would need at least three and I wouldn't put more than 5 in a ten gallon tank.
20
You can but it is cruel and it wont live very long.
The fish are not bad together. But way to many fish for a ten gallon tank. You put one fish for every gallon. They will probly do fine but you will have to clean more.
you mean in a ten gallon tank? yes, then, if it is a stable tank, and there is a male and a female, then it is possible. that has happened to my 10 gal. before.
you can, but its risky. i dont recomend it. maybe try one and see how it does before you put both in
I would suggest upgrading to a 10 gallon tank.
Yes that is big enough but you will need a lid so it doesnt escape