I have 3 upside down catfish in my 29 gallon. I absolutley love them. They have driftwood and plants to hide in. They are fed Fluval Bug Bites daily, and flake food that gets to the bottom, and they and my corydoras share some Tetra Shrimp Wafers at night. They also get frozen bloodworms once a week. I skip one day of feeding each week too. Am I over feeding? The Upside down catfish seem to be a bit fat. At least compared to other upside down catfish pics online.