Stressed axolotl, or excited with new environment?

[secondriley]

So my newest baby axolotl is swimming around a decent amount and i heard him pop up the water a little while ago, my other two axolotls are perfectly fine and im not sure if he's stressed out or just enjoying the new environment. I have a 40 gallon tank and 3 hides and some plant decor and was hoping someone might know what is wrong. When i bought him he looked very very stressed in the tank he was in at the shop, he eats once to twice a day and just swims around a lot. Any information would be great

 

[Hayleyy]

My guess is he is enjoying and exploring the new tank! Signs of stress to look out for is curled gills and/or tail, not eating.

 

[secondriley]

Cool, thank you, he eats like a cow so that makes me feel good. Hopefully he stays happy with it then