On a hot, sultry, mid-August day, I’m standing thigh-deep in the slow, muddy Rio Grande watching U.S. Army Corps of Engineers’ Fishery Biologist Dr. Michael “Mick” Porter and Aquatic Ecologist Justin Reale; Eric Gonzalez, Michael Hatch, Matt McMillan, biologists with SWCA Environmental Consultants; and TetraTech biologist Michael Marcus seine for fish.