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Glass Worms

4K views 9 replies 3 participants last post by  Fish4Andy 
#1 ·
I bought a bag of fresh Daphnia today and added them to my tank (after draining the water). I noticed there are now glass worms swimming around in my tank, they are about 15mm long. Anyone know what they are? Are they ok to be in?
 
#9 ·
Are the "glass worms" little white flat worms?

They are most likely Planarian. Mostly harmless, although I've heard that they might attack young or weak shrimp. Cutting down on feeding will keep them under control, just like any other aquatic pest.
 
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