So called "Congo Frogs"

[SarahBravo]

My LFS has a tank full of gorgeous little frogs. They are a dark greeny-brown in colour, about an inch long, and the tank is only half full of water so they can crawl out on their bogwood and breathe.

From what I've read Congo Frogs are actually ADFs - and therefore totally aquatic. Anyone have any idea what these could be? They are soo tiny and cute!

If I set up a half water/half land thing (sorry, forgot the word, senility is setting in) I presume I just use a filter and heater as normal just making sure they're under water. Do I have to heat the air as well?

Thanks!

 

[OohFeeshy]

Do they crawl out? If they do, then I don't thnik theyre ADFs. Or ACFs for that matter. My lfs sells the same thing, but I know they are ADFs becasue they have ACFs in the tank next door.
EDIT- Off topic but I was wondering whats the minium tank size for an ACF?