For how long will it be Mexicos largest natural lake? Laguna Chapala south of Guadalajara is today still 113 km long and up to 32 km wide. But the greedy large town and metro slurped half of the water from the lake since the turn of the 20th century. Most fishes were killed by pollution; surviving inhabitant is a tiny 5 cm long fish that shall be a delicacy. We relinquish since we are not sure about how the pollution was solved.