Canals where I live are full of these fish. Does anyone else catch them? I've only caught a few ...

I've only caught a few myself, small jigs or in line spinners have worked.

Little tiny green chenille wooley buggers when they are sub surface and dry flies like a Cahill when they are grouped up at dawn vacuuming the surface. Good fighters but stinky and they deal up the boat something fierce. It amazes me folks eat them.

Tiny jigs are about the only thing I've ever got them to bite. Heck of a fight on light tackle. 

I caught one yesterday on a crappie jig, first one in years.

square bills.....