Hitchhikers good or bad?

[Hockeynut]

Had these guys come in on a frag today should I toss them or keep them? They are tiny about the size of a dime tip to tip

I believe there mini serpent stars (thanks Edwin) but should I ditch them? Looking for an opinion

 

[MatteZ]

keep them!

 

[greybolt03]

Mini brittle stars great scavengers. Keep them

 

[dppitone]

awesome, in a year if kept in a protected space they'll multiply nicely

 

[NikkiT]

Keep them.
They don't do any harm, and they are free clean up crew!