Lawnmower Blenny attack other animals

[Chaos1783]

Hello I recently purchased a lawnmower Blenny and have had him in the tank for 3 days. Today I noticed my sand sifting star and coral banded shrimp are missing 2 legs on the star and a arm on the shrimp. Do u guys think the Blenny is doing it

 

[LetItReef]

Had a Lawnmover Blenny and had no issues. The arm on the CB will grow back in a few days. How long do you have your Sand SS?

 

[Chaos1783]

The CB and the star I've had for 1 year

 

[melypr1985]

The sand sifting star could be dying. They eat the fauna out of your sandbed rather quickly and can starve to death when it depletes your sand of food. It's a good idea to switch him out between two or three tanks periodically. I know a few people that trade off one sand sifting star between them.

I've never seen a lawnmower blenny bother a starfish of any kind or a shrimp. I HAVE seen them attack each other and sometimes defend territory to another fish- though that's been a rare occurrence for me.

 

[Chaos1783]

Yea that's what I figured also. I was just curious because all of this begun right after I added the Blenny so I was unsure