Just trying to get into frogs, experienced with aquariums already. Hoping to learn more and get some frogs. What genus/species would be good for beginners? How big of a tank would they need? What do I need, besides the tank, a light, and fruit flies? Do you need to keep frogs in groups, or are singletons fine? Are there any easy, arboreal dart frogs that could be kept in a paludarium (half water, half land)?