When turned tank lights on found little white worms and thought they were parasites but remembered I first had detrittus worms when i set up the tank but they have now gone (wasn’t bothered by them just went naturally). I don’t think they are parasites because my bristlenose don’t look skinny. The female did but that was because she had just spawned and the next day put on some belly fat from eating vegetables. They look very small but white and crawl along the glass. There’s quite a few. One of my bristlenose fry just went over them so don’t know if that makes a difference. Cheers