fish tank parasites

Question
i have cleaned my fish tank and i keep getting these very small parasites on the inside of the glass you can only see them if you look close i don't know what to do to get rid of these parasites can you help?

Answer
Dear Star,
From the lack of good descriptive notes about the parasites appearance. I can best say that they are very likely one of the many common aquarium pests that can get into aquariums frequently. All are harmless scavengers at the most and often their presence means the aquarium needs better or much more frequent maintenance. Doing a good water change and gravel vacumming plus a filter cleaning should help greatly.

If you would like to know what the parasites may be, just tell some distinquishing appearances that the bugs have and I will do my best to help!

Best wishes and happy holidays!
Karen~