A staple carp fly in the Texas Hill Country. It’s articulated with plenty of movement — the tail is basically a woolly bugger with foam, so it floats up and wiggles in the current. The foam tail and carapace work with a hidden belly bead and bead-chain eyes to keep the hook point up while you bounce it along the bottom.
It has fooled plenty of other species too: trout, bass, drum, gar — try it on anything you come across.