I sent in an ask couple days ago about my betta dying and thinking it was my ADFs. When I purchased them, they were labeled as African Clawed Dwarf Frogs. Is there a difference?? Or is there even such a thing...
There is no such thing as an "African clawed dwarf frog". There are African clawed frogs (ACF) and African dwarf frogs (ADF), which look similar as juviniles but are completely different as adults!
African dwarf frogs (Hymenochirus boettgeri) are small fully aquatic amphibians that stay ~2.5" long. They are social and should be kept in groups of 2+ and the minimum tank size for two is 5 gallons. They like their water cooler than average (70-75F) and eat bloodworms, blackworms, tubifex worms, etc. Note that ADFs have webbing between their front feet, African clawed frogs do not!
African clawed frogs (Xenopus laevis) are also fully aquatic frogs, however, they do not stay nearly as small as ADFs. Adults get 3-6" long (females are much larger than males) and are ferocious predators. They eat nightcrawlers, live fish, frozen krill (shrimp), frozen fish, anything moving they can fit into their mouth. They are not social and do not need to be kept in groups, needing a minimum of a 20 gallon tank for 1-2 adults.
Of course, that is a photo of an adult. Juveniles can be confused with ADFs very easily. Like I said in my response to your post, another dead giveaway is color. ACFs come in albino, leucistic, and dyed varieties. ADFs only come in wild type and, very rarely, leucistic morphs. You will never find that color in pet stores, so if it's white it's a clawed frog, not a dwarf!
Clawed frogs will eat any fish that can fit into their mouths, and attempt to eat fish way too big to fit into their mouths. This may stuff a large fish halfway in, crushing it in the process, and either choke on it or spit it out. Or they may catch a fished long fins and try to eat those, which is entirely likely to kill a fish even if they never reach it's actual body. The shock from the attack (which can last for a while) is enough to kill plenty of fish.