On the same day I got my mice, I also picked up some African dwarf frogs

They're small (about 1.5 inches long), aquatic frogs and totally adorable! I got them from a woman who was going away for 3 weeks and didn't have anyone to look after her tank, so she was giving them away. She asked me if I wanted her catfish, but I politely declined because I know nothing about her!
I got them primarily for myself, but I'm going to teach my brother how to look after them so he can maybe have them when I leave home

Right now, they live in a little tank that holds about 3.5 gallons I think. Most say you only need a gallon per frog, but I want them in something bigger eventually. The tank I was going to put them in needs resealing, and I don't want to put them in the 30 gallon I just bought because they're so shy that I'd never see them! But when they're in a bigger tank, I might add some guppies. They're feeding on frozen bloodworms right now, but I'm still looking into food options. I know they eat guppy fry, but I'm not sure if letting them eat live babies is cruel (I have to say, I know very little about fish) so... I'm figuring that out!
So anyways, their names are Thor and Loki (if you don't love The Avengers, you're crazy!), but it's so hard to get good photos of them! This is the only one I have so far, of Thor (I think, they look identical to me!) looking totally adorable: