It may have been a copepod...are they white? I have them in my RCS tank, and my Betta spawning tank. They make good food for the betta fry, but I am not sure RCS will eat them...my RCS tank gets overrun with them and I do 30% weekly water changes. I think if I did less, I'd have to move the RCS into a different tank and just let the copepods have that one. LOL
I also have some other mite type critter in my betta spawning tank...these are brownish-orangeish. I kill them as soon as I see them...these tend to stay at the top of the water line, and not actually in the tank.
I also have some other mite type critter in my betta spawning tank...these are brownish-orangeish. I kill them as soon as I see them...these tend to stay at the top of the water line, and not actually in the tank.