Maybe Guppys or Mollys or if there are any Apistos that can handle pH 7.0-8.0?
< The male guppy's flowing caudal fin makes him an easy target. Mollies may be worth a try. Apistos, like most cichlids like to stay close to the bottom to be safe with a crayfish. A. steindachneri and A. cacatuoides are two species that can handle hard water. But I still wouldn't trust the crayfish.> I really want something a little ‘different’ so have skimmed around these options. I have literally spent the past few months ‘writing off’ various options due to incompatibility in one way or another. Thanks for the advice! It is really appreciated. < Once again, think fast moving, mid to upper water column schooling fish.