He's hanging in there. He hasn't eaten for nearly a week. I've tried the peas, but he's not interested. I put a fresh algae wafer in last night but, again, not touched it. He's just sucked onto the side of the tank - doesn't matter where he starts off, he always slides back up to the top and his tail droops over! He has changed positions around the tank a bit more in the last 24 hours though. He's due another dose of anti bacterial meds at the weekend - not sure if they're doing anything or not really. I think it's going to be a waiting game. His breathing seems to alternate between normal and slow. His tummy is a bit bulged, but no worse than what it was like a few days ago, so perhaps he's just fat!
Anyway, here's another picture of him taken today.