Do lotls "need" air??

[Brainiac and Lex]

Hi everyone, I recently noticed a strange habit that Lex has really done a lot before but recently its more deliberate and seemingly pointless...
he`s healthy and all and his water has the right cycled levels but over the last few months he`s been intentionally and spontaneously swimming to the surface and taking a bite of air...???

Before I just assumed he's just a nut who swam up too high lol and was either surprised/ testing his limits and maybe the odd time trying to escape when his levels weren`t right which wasn't for long. A couple times recently though, he was just chilling on the floor, then fairly quickly and yet very leisurely swam up and bit the surface, face dead set on it and apparently for no reason XD he does a lot of funny things but idk if he actually needs air or something?

Just very curious now cuz when I think of it he often bites his bubbler tho I usually try to keep it out of his way/ I try to distract him if he starts. Is Lex just a weirdo or what is happening??

 

[Brainiac and Lex]

woops accidentally posted under the wrong subtopic, I`m gonna post this in the general discussion so it`d probably be better to respond there

 

[Dr. Phil]

Didn't see this posted in the general discussion so I'll reply here. Axolotls respire through their gills and skin as well as their lungs. Mine routinely like to go up and get a gulp of air - at least that what it seems like they are doing. You say you have a bubbler, so I wouldn't worry about low O2 levels in your water, as long as it is not too warm (ideally 16-20 C or so). As long as he is eating and seems healthy, I wouldn't be too concerned.