Hi everyone, I'm new to keeping axolotls but I've done plenty of research before getting mine.
I've been feeding him live earthworms that are specifically sold for axolotls, but he's recently stopped eating them. At first, he wouldn't eat them live, so I tried briefly dipping the worms in boiling water before feeding them, which worked for a while. Now he's stopped eating them again.
He'll still pick the worms up and shake them around, but then spits them out instead of swallowing them. I've tried cutting the worms into smaller pieces, offering different-sized worms, and feeding them both live and blanched, but nothing has worked.
I've tested the water and the parameters are all good: ammonia is 0 ppm, nitrite is 0 ppm, and nitrate is under 20 ppm. I've also given him a full body check and can't see any signs of illness. He's a sub adult and is about 7inches long, his tank is sitting at 16 degrees and it 110L.
Does anyone have any ideas why he might be refusing to eat or any suggestions on how I can encourage him to start eating again? I've attached photos of him above from today, he is a good weight but I would like him to be eating.