This feeder was originally designed for an elephant nose fish that had difficulty competing for food but could reach between the bars and knock out food in its own time, however, I found it also worked well to feed shrimp and other small fish.

Version 2 I have added a new version that can be printed without supports because the original was a bit of a hassle to clean up. The model is also cleaned up and the faces are smoothed. I would recommend printing the new one with a brim as the parts are fairly tall and thin.