Is this normal

This is Ama we found her walking up stairs the size of a dime had her for a little over a year. We once bought her a group of scavenger fish for feed well..

There were originally five fishes, I bought them as feed. They were super small but to my surprise she has kept two of them alive. They have been literally co existed for almost five months now, they’ve grown to be huge now almost the same size as her. I never notice any food aggression they almost share food sometimes they still good from her haha but they always spit it out