Okay, so basically my grandma rents places out, and this lady ditched out and left a fish in a nasty tank filled with brown water and snails for a week without food and im sure much longer without a water change. Today, a week later, they go in to clean it and find this fish in its nasty stuff and they figure who better to give it to then me aka family fish girl LOL! But i know alot about Bettas....Not other types, and i got no idea what this is. Its tiny and pretty and underweight im sure, and its a bit raggedy but i cleaned its tank, put fresh water in and prime and im just unsure if it needs heat or an airstone or what... I tried to get pics of it but its fast, i hope someone knows.