I have two funny stories.
When I first got Pandora she was a tiny skinny thing who hid most of the time. It took her WEEKS to figure out where the food comes from, unlike my other girls who figured it out in a few days.
One day, because I knew she must have been hungry, I fed my girls on the opposite side of the tank from her. While the other little piggy girls were eating, I put a couple of pellets above her. One sunk down, hit her on the head
bounced off and floated down to the bottom while she watched it like: "what was that?"
Pandora has since learned where the food is and now eats like the rest of the piggys.
My other story is about a king male who lived in my 55gal community tank
masquerading as a female for a couple months. He lived with 2 bala sharks, 3 blue gouramis, a couple of platys and 7 tetras. I fed that tank community flake food and bloodworms. When i finally noticed she was actually a he, i separated him into his own ten gallon until i could find a permanent home for him. He refused to eat the betta pellets i tried to feed him, but the minute i put some of the flake food in he ate like it was chocolate! silly boy.