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How much bigger do they get? This was like the size of a pencil eraserHi! Asterina star! Some people say they’re coral eaters but I haven’t experienced that. You can remove it or leave it just know that they multiply rapidly![]()

One of the SP in my system look very close to your one (exist hundreds of different coloration and many SPs), but the bigger one is no more than 2 pencil erasers heads together. And it multiply rapidly mainly if you have much leftover food, and detritus. if that's under control you won't get many of themHow much bigger do they get? This was like the size of a pencil eraser

So hard to let that cute little guy gohi,not too many over size of dime,mutiply fast ,remove as you see them to keep under control![]()
If you have one you probably have moreSo hard to let that cute little guy go
I keep them around cause I think they’re cute and I know for sure mine don’t bother the coralsI think there's been 2 on my rock since I started the tank now that I think about it, I thought it was just some type of blue coralline. They don't move much and I've only ever saw those 2.One of the SP in my system look very close to your one (exist hundreds of different coloration and many SPs), but the bigger one is no more than 2 pencil erasers heads together. And it multiply rapidly mainly if you have much leftover food, and detritus. if that's under control you won't get many of them![]()
Ya I think there's been 2 on my rock since I started the tank now that I think about it, I thought it was just some type of blue coralline. They don't move much and I've only ever saw those 2.If you have one you probably have moreI keep them around cause I think they’re cute and I know for sure mine don’t bother the corals
you are right, and the most predator asterina are popping out when is dark. in my system they aren't afraid to come all the day long, and aren't hiding that much where there is free foodYou will probably see more a bit after lights out … seems like that's when they come out scavenging for food.

you are right, and the most predator asterina are popping out when is dark. in my system they aren't afraid to come all the day long, and aren't hiding that much where there is free food![]()
… and if I haven't cleaned the glass in a few days I can see the trails they leave behind in the morning … so I can appreciate a small population of them in the tank.Which mean they are doing good job for you in your system, and mainly after you "see the trails they leave behind" can show you and in what condition is the glassI do pluck a few out from time to time … as I have a tendency to overfeed my fishy friends … from time to time… and if I haven't cleaned the glass in a few days I can see the trails they leave behind in the morning … so I can appreciate a small population of them in the tank.
, something I do use that look, to determine in what condition is mine, and if there aren't enough on the glass to give me enough cleaning, I do the job, but the glass now I haven't clean it for about 2.5 months, before it was for shorter time more dirty, now isn't bad at all, got huge population colonista snails. Now if you have much enough and good CUC, they can keep all dirt in touch and take care of 
Nope I watch my tank at night alot. Never seen them. The plug i had it come from wasnt in my tank that came out after dipYou will probably see more a bit after lights out … seems like that's when they come out scavenging for food.
I could be wrong though and maybe they're something else. I will post a video of what I see in my tank. That star came off a plug that I just got after dipping it. It wasn't from my tankI think there's been 2 on my rock since I started the tank now that I think about it, I thought it was just some type of blue coralline. They don't move much and I've only ever saw those 2.
I got a good look and can see i do have 3. I will keep an eye out ty 4 infoI could be wrong though and maybe they're something else. I will post a video of what I see in my tank. That star came off a plug that I just got after dipping it. It wasn't from my tank

