Remus is my dragon PK that's in a 5 gal hex right now. I've had him for about a year and a half.
He's very happy and healthy but for the last few months he's had some trouble eating and I think it might be related to his sight.
He won't chase after a pellet after it passes by the side of his head, although the rest of my bettas will notice it and accordingly swivel their head in the direction that it's moving and follow it. I'm guessing he has a limited range of sight and after it leaves that, he'll just let it go.
In addition, he has a hard time aiming for his food. Even though he gets very close (to the point where the pellet will be right above his mouth), he often misses and it takes him a few tries. I'm going to guess this is a perception problem.
Since the tank is filtered, the food moves away pretty quickly so I have to drag the pellets around for a minute or two by finger in front of him.
In other words, feeding is becoming a little tricky for him. I've been thinking of switching him and Salt & Pepper. S&P is in an unfiltered 3 gallon tank, and I feel like without a lot of water movement Remus will probably be able to eat easier.
What do you guys think? Does it seem like his vision is going bad? :s