Since my last few betta fish died, I didn't really want to try to take care of another, for fear of killing even more of them. I assume he wasn't happy living in a community tank since betta fish are loners? Anyway, atm I have 3 black neon tetras, 5 guppies of different kinds, and one danio since his friends just died. I have a few live plants and caves in a 20-gallon tank. I'm looking on here for some knowledge on how to take care of a community tank. How much and what to feed, upkeep, if I should get more danios, how to keep my plants alive, and just any other pointers, since I am now doubting all the research I've done about aquariums. I see sooo much conflicting information on aquarium maintenance, and I'm hoping to find some info from real people who have fish.