Worms in fish tank?
They are tiny, thin, reddish worms that I believe are living in the substrate. They don't look like bloodworms. They are not quite red enough or thick enough. What are these?
- AkeathLv 72 months agoFavourite answer
Probably Nematodes. There are many different species of these, the ones that are free swimming and live in the substrate are harmless scavengers. The ones most common in aquariums come in pale reddish/pinkish and you can also find white ones. They won't hurt anything, but a large population of them means that you are probably overfeeding and not gravel vacuuming thoroughly enough. So make sure that there is no leftover food when you are feeding your fish, and be thorough with your weekly gravel vacuuming.
- FuhrLv 62 months ago
Those are unimportant. You can go about your business. Move along.