Do you feed it sinking or floating pellets?
Your new gar looks great. How long is it? 13" - 15" ?
I feed my gar both sinking and floating. I believe he prefers sinking though, and besides, the datnoid eats all of the floating pellets before he can get to them.
My new gar is only 7-inches at the moment. Haha, the photo makes him look big.
Here is a better shot of his size with my hand:
