They are not fussy.
Do feed them a varied flake diet. An occasional live feeding would be nice. Zebras, IME, can get bent spines very easily if not fed a varied diet.
I think it is a gill crab..but it could be TB. I have had more bent danios over the years, untill I fed them a more Var diet.
If you like the Zebras(the longfinned are nicer), try the pearl danio. This is the best looking I think. I had a few, and they were actually very pretty.