Looks great indeed. Can you put numbers on the growth, please?
understand what your saying but wouldnt most monster catfish take small rodents and young water birds in the wild?
I'd think that for the vast majority of
predatory monster cats, the diet is 95%-99% of aquatic origin - fish and eggs, crustaceans, shellfish, insects and their larvae, etc., not counting aquatic mammals, e.g., water rats, otter pups, an occasional ferret, etc., and diving birds, e.g., cormorants and Co, as well as dead animals and birds. That's what I try to mimic.
Surely, they are opportunistic and will try to eat anything edible. It's a tough life out there in the wild. Survival of the fittest. Are there are exceptions? Of course. Some fish live by the slaughter houses and other food processing plants, some by the waterside restaurants and feed on scraps or what owners throw in to keep them around for the arousal of the customers, others by old cemeteries that are being washed out into the rivers, yet others by places where people dump their refuse, villages or cities, for which vulture catfish are renown...
I've never looked specifically but never seen a study on how such a differing diet affects the fish's health. I know Spaniards dump A LOT of food in Ebro river to feed the Wels to upkeep the fishing tourism business. I wonder if they study the effects of their activity.
I have seen the studies, e.g., cited in RD's articles (a prominent MFK-er), on fish that died in captivity (Public Aquaria) of more or less "natural causes" and that many of not most of them died from what is called a fatty liver disease because they were fed inappropriate diets of e.g., goldfish (too fatty for tropical predators, marine and f/w) or even non-aquatic foods derived from warm-blooded animals, whose fat turns solid at the water/fish-body temps.