Alpine Newt Disappeared

[Ankor38]

So I have a pair of Ichthyosaura alpestris in a 29 gallon tank that is filled about ~70% of the way, and pretty sparsely decorated with some Mopani wood sticking out of the water on the right and some horn wart on the left. I got them about half a year ago when I was just beginning to get into newts so I am pretty attached them, but I still am learning what I’m doing and that is what this is about. About a week ago is when the female stopped showing up and I didn’t think anything of it because it likes to use the mopani wood as a hide but today I thought it was strange that I hadn’t seen it and decided to pull out the wood and it wasn’t there, it wasn’t anywhere in the tank. I sifted through the sand, checked the sides and back of the tank stand to see if it had gotten out but it wasn’t there, I checked the wood and nothing. Since I don’t know what to do or where it could have gone, I figured I should ask for advice on here. So do any more experienced individuals know what could have happened?

 

[JM29]

Hi,
The first thing I would think about is escape.
Is there a lid on your tankand is it well escape-proof ?
If not, you can suspect your newt escaped. You can try to put a wet towel on the ground to attract it (but 1 week is long).

The second think to consider is your newt could have dug under a decor (wood, stone) and have been stuck up (and so drown).