Originally Posted by ChoclateBetta
I am wondering if I can train Carter to go the left side of the tank during feeding he would be able to get the food faster.
That's easy to do. Only feed him on the left side of the tank.
I had females that knew exactly to go to the front, center, top of the tank for food. They learned that the little door in the hood in the front and center, if opened meant feeding time. Eventually when they saw me approach they would always run to that part of the tank.
Associating a location or action with feeding time is the easiest trick to do. The first sorority I had had trouble coming up for food, because in the tank they were in they were so distracted and often didn't see me approach. I now teach my bettas that tapping on the tank rim means food. Now with my new sorority when I put them in the first time I tapped and they all immediately came to the top & center of the tank ready for food watching the top of the water.
For that it was as simple as tapping on the rim before I fed them. Only after a couple of days they associated that with food.