I noticed a couple of black grubs on the anal fin of this one. None of the others had any. All looked healthy, which is great because last spring was a bad one for fish losses, but that is another story for a different thread.
Corgi, depending where you are, add Redear Sunfish or Pumpkinseed Sunfish to your pond. They will eat the snails which is allowing the black spot to flourish.
Thanks for that info Essheup. I will research this with Dave, the biologist I deal with at Stoney Creek hatchery. Even though they are not on their list of available species, he may be able to get me some.
