The outlet stream of Baños de San Diego, Rio Grande drainage [Chihuahua], showing pollution by the large algae growth. (28.593245°N, 105.550064°W). Photo par Juan Miguel Artigas Azas. (30-avr.-2023).
Grande: Baños de San Diego
Conservation: The place has changed significantly since my previous visit in 2007, with the little creek having been diverted into a pool. One segment of the creek where I observed and photographed C. pachycephalus in the past is now dry, the creek currently flowing over a muddy substrate in no more than 20 cm of water. The fish however are there.
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