frog/crab question

lamberb2

I would eventually like to get some of the small african frogs or small red crabs in my tank, currently its stocked with 10-12 Mollies, and 4 Neon Tetras, would there be a problem putting them in? And what do i need to take care of a crab other then a way for it to surface and get air.

Myrtaceae

Red claw crabs need brackish water over the long run. Your livebearers will do fine with some salt in the water, the neons won't-- so you'd have to either move the neons to a different tank or not go with the crabs. You can keep them freshwater short term, but they don't do as well.

Mollies can get pretty big/messy too-- not sure how big the tank is.

I've never kept frogs so I can't really advise about those.