I am wondering what kind of schooling fish would go well in my 50 gallon. I really like some tetras but ive heard stories of some schooling fish all killing or hurting each other. My current stock is: 2 otos 1 RTS 1 Sword tail female 2 female mollies 1 male molly 1 x ray tetra 3 cory cats 2 male platies I just rehomed my GBR's and....also I had a death.....my DG died from a bloating infection. Anyway I was thinking of some serpae tetras but they seem not as a tight schooler that I would like. Any ideas? Thank you!