I have a red tail catfish and I had him for about a month he is about 16 inches long and ate 150 bucks in food already including accidental food as in 3 Oscars and a 6 inch Arowana.....what can I have as a tank mate with him that will hold their own?
You can only blame yourself for giving him the opportunity of eating tankmates. You can keep almost anything with him that doesn't fit in his mouth, is docile, and has a fast growth rate. Another choice would be something considerably bigger than him and docile.