Have to agree with Loco -
There lots of fish that get "muddy" tastes that are not chronomids eaters. For example in late summer I have had kokanee get muddy and all they were eating all summer were zooplankton (they may eat some chronomids in early spring but they were fine taste long after they switched to zooplankton). Trout from small spring streams eat lots of mud burrowing insects (mayflies etc.) w/o getting muddy. Largemouth bass over 3 ro 4 pounds also get muddy tasting in some waters and their diet rarely contains anything as small a chronomid.

Tight lines
Smalma