I have been eating James river Catfish for a few years and I have experimented with size quite a bit. Anything under 2 lbs has so little meat it is not worth cleaning. The fish taste real good from about 2 to 8 lbs. They start tasting like dirt much over that. they are edible up to 13-15lbs. they become inedible over that. Taste is personal, others may disagree.I kept a 20lb blue cat for eating purposes about 20 years ago....it was tough, gamey, and greasy.....I can't imagine trying to eat one at 60-70 lbs. I recently read results from a 2009 study (VCU/VIMS) that estimates approximately 70% of total fish biomass in the vicinity of Hopewell consists of blue cats....maybe we oughta start just chucking 'em up on the bank or turning them into fertilizer (but the the PCBs would get into your veggies!).