Eels are also great fun. You can play with it outside of its tank for five to ten minutes while it breathes air. They are very good at hide and go seek, except that you'll always be the seeker. Eels can fit in a fifty gallon tank easily, so you can keep it in your room and play with your eel when you are lonely and need a friend.
Oh, and let's not forget that eels can do amazing things! Eels are great escape artists. Be careful because they can escape from their tank and die. Eels can swim really fast too! Head to Google and search for "See Mr. Eel Escapes (Fire Eel)" to watch an eel swim unbelievably fast. Eels can also survive for a short while in a tank that is smaller than they are. What an adaptable pet!
Clearly, eels are the coolest pets ever. Remember when you go to get your eel that cold water makes male eels. Also remember to leave time for all the ammonia to leave the water before you add your eel. Eels are such great pets because they are fun, they can live in a very small tank, and they are gentle. Eels would also be the perfect pet for a school like P.S. 33!