That's interesting. My school also has a fish only rule.
One of my friends had an ADF, but he got evicted.
Kind of silly, I think. In terms of care and disturbance, a frog is just a noisy fish. It's not like he would escape and sleep in people's drawers.
The girls on campus are such wimps. I'd plant a toad in one of their dorms, but they'd probably kill it, hahaha