its eating as much as the rest and swimming about happily, just did a 20pct water change and ran a few water tests to make sure nothing was out of whack, nitrate(50mg/L) and nitrite(0.8mg/L) were higher than last check, I think thats down to the tank cycling. Ammonia is almost zero.
Will keep an eye on it and see if its acting odd, I can't see any scales sticking out, but my eyesight isn't fantastic, the fish wouldn't sit still long enough either