ID Please

[happyreefer101]

Did water change earlier and found these guys. Are they good or bad? Thank you in advance for your help.

 

[VKP01]

Left is a limpet, harmless snail. Right looks like a bristle worm, it can sting and will multiply. Good clean up crew, some people like them some don’t.

 

[happyreefer101]

Great. First time seeing the limpet in my tank. I have seen much bigger bristle worms coming out at night. They are skinny and long not like the one above.

 

[reef lover]

Ya that one looks odd . Fat and a small head...id remove him.