Just an FYI but my silver aro has a fairly low protein diet consisting mainly of a variety of floating pellets (koi, pond fish etc). He also grabs cantelope, bananas, spinach as well as many other fruits and veggies that I put in the tank for my pacus. The aro has grown from 7" to 22/23" since November so thats 15-16" in 8 months. He also does not have dropeye and has a very nice shiny look to him.
KNH
KNH