What is This

Modjit

Modjit

AC Members
Feb 12, 2005
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Please can you help me I recently bought my wife a new mmarine tank and after a while a bunch of Live Rock well I have noticed a load of feather duster worms on them but also some other things I have rencently found out that she has a load of fire worms some very small but one big one also something has now crept out of the rock and i don't know what it is please help me i,m enclosing a picture for identification the onlyway i can describe it is like a middle of a star fish but it has six legs

Question.JPG
 
A very common type of starfish. They typcially don't get much larger than a dime in size, and always have weird number of arms--they reproduce readily by breaking off a chunk of arm, which then grows more arms and continues the cycle. Harmless little algae eaters, for the most part--there are some species that will target corals, but they are pretty rare.
 
I thought resorting to corals and such was a matter of food availability? I've never had a problem with them in my tank--they spend most of the time on the glass, eating algae.
 
corriewf said:
They are astrina stars and I would remove them as the ones that eat coral and coralline look exactly like the ones that dont.
Click to expand...


It is my understanding that the ones that eat corals have a brown center. Very rare in the home aquarium.
 
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