DB has 4 species of fish in 4000 gal. Depending on how many CC he has in his one or two tanks, the density of CC may not be high enough to prevent fighting. Catfish in cages and tanks need to be at a certain density or fighting and deaths will occur. DB is probably not frequenting this site much after his initial query, thus we may not find out how things are currently going on in his aquaculture system. I think one of his initial problems was using polyculture as a beginner.
