What is it that triggers the fish to spawn, it must be water temperature? What would that be for gizzard shad, does anyone know?
Mostly water temperature, but photoperiod, moon phase and changes in water levels can also play roles depending on the species...
Gizzard shad is mostly water temperature, but I have also heard it is moon phase and in the local rivers, they seem to spawn a couple days after a heavy rain when water levels are just starting to drop...
