Just know there are two different kinds. You got the Chinese and the Japanese fire belly newts. I have and still do keep both. The Chinese FB are more docile, "roly poly", and bit smaller and the most common to find. The Japanese FB are a little more aggressive, faster, little bit bigger, and harder to find. I've kept both of them together fine. They are constantly scavenging for food. They will try to eat anything they can get their mouths on. I feed mine frozen bloodworms and once in awhile shrimp pellets. But I have personally seen them eat: small worms, small crickets, slugs, snails, small fish, pill bugs, black worms, and probably their favorite frog tadpoles. I've always kept them in my basement where it's usually 67. I have kept them in the low 50's for a winter one time just fine as well. But yeah if it starts hitting 80 they will be trying to escape by crawling up the side of the tank. Keep a lid on it. These guys can escape if given a chance. They have bad eye sight but amazing sense of smell. They do recognize you and begin to swim excitedly around when you get near the tank in anticipation of food. Once in awhile mine will hang out on land but 90% of the time they are in the water. I've noticed the more plants and or cover in the water the more time they spend in it. I have 4 and a juvenile in a 40 gallon. You could do 3-4 in a ten if you provide lots of plants and nooks and crannies for them to explore. These guys are curious and are usually snooping around sniffing everything like a dog. They are cool. I've also kept eastern spotted newts and Oregon newts too. But the fire bellies are the easiest and hardiest to keep.