Stuck on glass

I love asterina stars! They are so cute. Mine have not exploded out of control and both my aquariums have been set up for at least two years.

 

I just realized I have a yellow watchman goby that hides under a rock. Do you think that he'll eat the asterina??

 

I pulled 9 off my LR just the other day. The rock is spotted white where they ate the coraline off. The ones I pulled where of the blueish grey type. I'm wondering if they change color according to their diet???

 

There are hundreds of types.

Confirmation of exact type is even difficult for marine biologist.

The number of arms means nothing of value ID wise. Coloration does sometimes, I would be weary of any blue or red ones.

Most found in the average aquarium are simple algae or coralline eaters, others however can either be opportunistic feeders eating zoanthids or predators of corals.

Unless you actually catch one in the act of eating a coral I would assume it's either a coralline or algae eater.

 

That I don't know but I have the bluish stars and beige stars. Nothing awry thus far.

 

I haven't seen any in my 90 and its been set up for more than 3 years. I'm wanting to get a ton in my 20 once its set up and established.

 

never heard of astrea becoming a pest , i heard some may nibble at corals (though i have personally never seen this) i think they are an awesome little clean up critter.

 

Here you can see the star just right of the zoa and the white spots on the rock are the damage thats been done by them. No big deal really. Personally i don't like em

 

Damage done to the zoas or to the coralline?

 

Oops my bad-that does read kind a strange-its the white spots on the rock where the coralines been eaten away. sorry