hey lad, welcome to MFK. I'm sure us fishkeepers stateside would like to get ahold of some baby octopus'. I have never seen any or heard of ppl feeding their cats them. It looks like a good diet, though. saltwater goods are better for FW fish, they dont transfer any parasites. The best diet you could give your fish is a mixed diet.
You should post some pics of your TSN in the photolounge