Hmmm have you looked at dwarf puffers!
Or what about something like cherry shrimp!
Channa orientalis!
Something to chew over, these are not reccomended together...lol
I'm thinking about a small bichir or something. I also thought of BGK but my tank is too small O:
I never see any galaxy rasboras for sale around here and the problem is also that I'm still a student so can't afford any expensive fish
Does the axolotl breathes air or has gills?