Not all killies are annuals -- Jordanella floridae, for example, live for years. I also keep Pachypanchax sakaramyi, which also are not annual fish. Killies are fascinating fish and, while many of them have very specific demands, others can be easily kept in a community tank if that's you desire.
__________________ Tanks everywhere, a well-stocked garden pond outside and a Horde of Flatcoated Retrievers  |