Well...I got a 20 gallon tank for my birthday and I was so excited my very first tank that was actually mine
My mother kept a 10 gallon that was hers and I had very little say what went in. ANYWAY, I always wanted Tiger barbs they look so cool and they school. And are so active in store aquariums. Well I got some. And they didn't school together. They weren't active and they died. uh...so heart breaking. I would wake up every morning and find one dead. until there was one. I put the poor thing out of it's misery and mine too. no more tiger barbs 

I won't add anymore and I'll also have a look at that article...Thanks again Andy