im not getting the pacu, this is the stock: lmb, jd, gt, ckf, managuense and maybe a red pike cichlid. no sun cats, and i dont know where to get the marbled cat, im going fishing on the amazon in february for a week--- tsn's r not really as big as they look in fishertman's photos, it is distortion, the fisherman's hand is holeding it out away from him, so it looks bigger than it really is because it's closert to the camera, there are some pics where peacock bass are almost as big as a man, this is because of distortion. tsn's are rarely caught over 4ft. you know a pic is not distorted when the catfish is on a fisherman's lap. and the bioload is not over, i know this because of my filters, my bog filter changed a pea soup green pond to crystal clear in 3 days, this is an amazing feat if u no anything about pond keeping. and plants remove all ammonia, nitrates, nitrites, from the water in the nitrogen cycle, in a bog filter (stream style) there is 100 percent no nutrients in the plant substrate, pea gravel, plants remove all nutrients, and convert ammonia into nitrites, nitrates, and then are therefore absorbed by the plants, the plants act as a never ending sponge to suck up nutrients, so in that, people with ponds using a successful form of plants, like mine, never have to do a water change, if you try this as a filter under your tank, you'll see what i mean, i have proof of this as my water is constantly no threat to fish, ammonia-0, nitrites and nitrates always under 10. Catfish do not grow to their top length in tanks because in the wild, there is arund 5 thousand gallons per neon tetra, just look at bthe amazon river, your never going to have your tank that clean, and your fish will never get as much room or food as in the wild, or as clean water. In conclusion, You'll never grow a real, as big as the wild catfish, in a tank