Allan01230;4320476; said:Why not get a red tailed prochilodus? A South American characin. It is peaceful very fast and will out grow the rest of your stock in the 150. Max. out at around 16 inches. If you go this route just get 1 as they do not play nicely with each other unless the tank is huge. 500-700 gallons for starters.
I think he just wants a fish for his 150
and not looking to upgrade