Ok, so I have 2 clutches (2 weeks apart) hatched and growing up in the nursury tank, a 2.5 gal eclipse mini-bow. I just went over to check on the wee ones and have found what I thought may have been a very small cat hair, or piece of cotton thread against the glass. Then it moved. Very wormy movements. Then it popped off the glass and floated around the tank for a bit and, oh hey, there's another. The 2 I've spotted now are less than 1/2 inch in length. Maybe closer to 1/4 inch. Are these planaria and will they harm the babies? If not planaria then what?