absolutangel04
Daphnia are People Too.
Also, if they are mites, they likely came in as a gill parasite. It is also possible you got them with some ghost shrimp that you fed.
Here is a link with a few avenues to pursue while trying to research what you have: Fish Parasites, or Just Scavengers?
Here is a link with a few avenues to pursue while trying to research what you have: Fish Parasites, or Just Scavengers?