Pond Boss Forums MANAGING AN EXISTING POND Evaluating and adjusting fish populations Cull bass or no?

Saprolignia is likely the fungus. Fairly common with fish in timber or somewhere they rub up against something often. Cold water can start this cycle also. Handling fish improperly or with dry hands is another way they are exposed to this fungus.
The 8-14" fish are the size you need to determine the frequency of, and thinned accordingly in central US. In TX, I can't speak for sure on that as you have faster growing fish and longer growing seasons.
Fish at different ages hang in different areas of the pond-usually associated with the preferred or available forage they desire-You may or may not be getting visual ID's on this size so sample by many methods, fishing, traps, etc to determine what you actually have in play before assuming a certain size needs culled. No replacement for good, accurate data.