spider
 

I found today 5 off them from my dead rock . something like small black spider. do anyone know what is it?? do they harm coral??
help please.
thanks

spider or brittle star?

spider
 

too small to tell, 5-6 legs long small and black coolour

Sounds like an alien creature.. But could be a Brittle or Serpent star great addition for a clean up crew.

Have a google those 2 and compare

If the tank contains zoanthids they could very well be zoa spiders.

Google search picnogonads (sp?).

Man those things give me the heebies... blehhh

spider
 

they came out from new dead rock was put in tank. big rock. if you want trade with frogspawn or maxi. I m in:biggrin:

[quote=richmond;823256]they came out from new dead rock was put in tank. big rock.

I thought ur not supposed to put large dry rock into a running system? Wouldn't the die off cause a new tank syndrome?

rock
 

one rock at week not change your water chemistry. just check water ammonia and nitrine. only should be fine .