I have upldated the first post and added a new mod I made. It is the axolotl habitat made buyable. You can download it on cursforge here https://legacy.curseforge.com/sims4/build-buy/axolotl-habitat-buyable
The habitat is the same as the fallen log you find frogs in. Only a certain amount of the axolotls can be found in it the rest must be unlocked with breeding. The habitat will disappear once used. You can place as many as you want. I hope you all find this helpful, I know many simmers did like the fallen log for frogs 😉