Complex sentence: Most Alunocaras have the same demands and can be keept together in an aquarium however some species can cross breed if keept together and it is therefore recommendable not to keep those species together.
Split into simpler sentences: Most Alunocaras have the same demands and can be keept together in an aquarium. However, some species will cross breed if keept together and it is therefore recommended not to keep those species together.