I need some ideas on fish. Right now I have 4 zebra danios, 1 longfin blue danio, 5 corydoras of various species, and 1 BN Pleco. I need some help on what sort of fish to get next. I want a colorful and hardy species, not necessarily a schooling fish. My general pH right from the tap is 7-7.2, and my water is VERY soft, I have to buffer it just to get it above 0. So a fish that does well in soft, neutral water is what I'm looking for. Thanks.