Blue tang hitting emerald crab with tail

[MarineReefer]

I've had my blue tang for a few months now with no issues. I got some emerald crabs n the largest 1 my tang comes next to it and beats the crab with its tail. Almost like the tangs trying to get it to move. Anyone else see this behavior or know why the tang is doing this? Ty in advance.

 

[WV Reefer]

I've had my blue tang for a few months now with no issues. I got some emerald crabs n the largest 1 my tang comes next to it and beats the crab with its tail. Almost like the tangs trying to get it to move. Anyone else see this behavior or know why the tang is doing this? Ty in advance.

He is trying to stab it with his scalpel...... it’s how they fight.

 

[Phycodurus]

does the blue tang have a favorite grazing spot here and there? maybe that particular emerald crab is perched on one of the tang’s fav dining areas.

 

[MarineReefer]

does the blue tang have a favorite grazing spot here and there? maybe that particular emerald crab is perched on one of the tang’s fav dining areas.

Tang goes everywhere to graze so I dont think that's it.

 

[WVNed]

Clown fish nip, tangs tail slap. It's their way of saying I don't want you here.