Female axolotls protect their eggs by laying them in underwater vegetation.
Though not well studied in the wild, it's thought females can lay hundreds or even more than 1,000 eggs several times a year, under good conditions.
Large clutch sizes may aid the recovery of axolotl populations, if Xochimilco's water quality can be improved and invasive predators removed. Axolotls are critically endangered in the wild.
Image credit: © San Diego Zoo Wildlife Alliance. All rights reserved.
Axolotl embryo and hatchling.
Image credits: © John P. Clare via Flickr (embryo, hatchling). Some rights reserved.