axolotl salamander smell food on sand bottom, funny freshwater domesticated amphibian, endemic of valley of mexico, tender

albino ambystoma ambystomatidae animal aqua aquadesign aquarium aquatic biotic biotope blur carnivorous chalco clear closeup conditions controlled deathly decorative driftwood ecology ecosystem endangered fauna fish fishkeeping free gill gravel herpetoculture hobby juvenile lake leucistic metamorphosis mexicanum model nano natural nature organism paedomorphic popular predator rare regenerate salamander space tank temperate threat underwater unusual water wildlife xochimilco young