i am thinking of getting a Flagtail Prochilodus for my 90 gal with emperor 400. To fix a algae problem (to close to bay window and lights on to long). The tank mates are 20 3-4 inch roseline sharks (in there till Christmas or so) 10 brilliant rasboras and 10 diamond tetras 3 or 4 chinese algae eaters (removal soon). are they ok tank mates the Flagtail can be sold once he gets to big.