unknown creature

Question

unknow creature   I found these creatures in my tank after turning on my light in the morning. would to love to know what they are and can they hurt anything

Answer

Saltwater FlatWorm   Hi Chris,

From your image, I'd have to say it's a Flatworm.

Regarding Flatworms, typically they don't pose a problem, and are best left alone... or selectively siphoned off of (mainly) soft corals, out of reef systems, if you have a reef system.

Fish including CopperBand Butterflyfish will eat them.

Best Regards,
Dave

All Experts - Editor

http://www.ocreef.com/ - Director