I have sent this fly to Australia, Belgium, France, Germany, England, Scotland, Ireland, Malaysia, New Zealand, all across Canada and the U.S., and it has taken fish in each of these countries. To date, there have been 80 different species of fish in both fresh and salt water that have fallen prey to the seductive powers of the DDH Leech.
In salt water, this fly has taken bonefish, permit, snook, tarpon, redfish, greenling, and two types of flounder. In freshwater, the list is quite extensive and includes, to name a few, crappie, all types of panfish, all species of trout and char, pike, palleye, all species of bass, carp, channel cats, freshwater drum, bigmouth buffalo, red tail catfish, pacu, and barramundi. The DDH Leech just flat out catches fish.