Are minnow traps effective at collecting GSH and FHM in ponds? I've seen them work well in streams on minnows, and I improvised a trap from a coffee can once that caught a bunch of juvenile sunfish in a pond, but I've never tried setting one of these in a pond with lots of gsh/fhm:
Seems that it'd be a good way to catch some forage for transport to another ponds without having to drain the pond or catch any larger RES present.