Hi all...I just left a post under species, rainbow sharks, but I'll write my thoughts here again. I purchased one when I set up my 36 gal. tank, I made many mistakes, including the nitrogen cycling. My rainbow did fine thru it all, till last week, he is terrorizing every fish in there and today is going back to the
LFS I bought him in. I'm hoping to get an oto or cory instead. I was told he was a redtail shark, till I did some research and found he was a rainbow. He will grow too big for my tank, never mind giving all my fish heart attacks. He is a good eater, eats even the food that is floating to the bottom, he darts around and grabs it. I wish I could keep him but I can't.
Be careful if you buy them, they will more than likely terrorize the other fish.
Jackie