Little guy that needs IDing

[mustang420colvin]

I have noticed quite a few of these little guys. Could someone tell me what it is and if i need to get rid of them and if so how.

 

[investigator1]

Contributed by Guy Comstock, this pair of images shows the feeding mode of a carnivorous flatworm.

This flatworm is a predator on small crustaceans such as copepods which it envelops with the expanded front of the body, as shown in the upper image above. The enveloped prey are enclosed in the "bag" and eaten by the mouth, which is located in the middle of the animal.

 

[mustang420colvin]

should i be worried about these little guys

 

[danmhippo]

Nah......They are harmless to your tank. I meant they don't harm your corals or fish. Some wrass consider them delicacy.

 

[lordofpugs]

I have about a hundred of these guys in my refugium. Should I get rid of them?