Even though products say feed 2-3 times a way, I have never fed that much ever. I feed my fry 2 times a day, everyone else gets it about 5-6 times a week.
Fish in the wild will easily go a week or so without food depending on where they are and the season.
Any organic food like squash or cucumbers etc, should be removed everyday and only fed a couple times a week or once a week. Be careful if that is what you are using as the only food for your catfish, make sure you vary everyone's food.
This allows them to get different nutrients and minerals.
40Gal Planted- 10Gal RCS Planted
6 Julii corys, 1m Furcata Rainbows, 2f 1m Bose Rainbow, 2 mystery snail