Had 6 different arrowanas over the years all ate off the water surface and ate mostly pellets with some treats but my current black arrowana will almost never eat off surface had for almost 3 years I'm guessing somewhere around 30". This all started when I first got him and he wasn't in good shape and very skittish. I have other tank mates but he clearly runs the top of tank. Has anyone ever dealt with aro refusing to eat off surface.