I think we have one near our local pet shop but I'm not too sure. I'll get looking around next time I'm in town. I think I'll be able to find someone who sells worms around here, surely.
Well it's currently winter here so I can't imagine it's from heat stress and my tank gets no higher than 21C. I'm not too sure what his water quality was like in the tank he was in at the pet shop as all the fish lights in the shop weren't working, but they had just moved location so it may have been stress from that. I have given him two salt baths due to having to put him in a tank that had white spot in it. Would that help any? I think I've seen some of it floating around the tank. He's in with my other male and they're happy together. He doesn't seem sick, he swims around the tank happy enough, even swam over to me in the pet shop.
Thank you again for all your help. I'm highly grateful for it.