His scales are fine, and he's not swimming any differently. The tank is a 25 litre, the temp is around 26/7 and all the chemical levels seem fine. None of my other fish seem to be having any problems at all. Any ideas?
I'm really worried about one of my male guppies, if I didn't know he was male I'd swear he was pregnant. He's one of 5 guppies in my tank, all male and all (except him) are absolutely fine. I've left him 2 days and have just kept an eye on him but he's even bigger today!? Any advise welcome...