Royal gramma being a bully

[Deadlocked]

My RG was my first fish when i first started my tank. But when i put certain fish in he's a bully. Sometimes he opens his mouth, but other times he straight up chases after them and tries biting them. Ive had a few fish die and now im thinking it might've been him. I just got a smiths/ disco blenny and my RG is being super aggressive. Anyone have advice on what to do? I did set up a new nano tank and once it finishes cycling im thinking about putting him in there. Thanks in advance.

 

[KrisReef]

PicoGram for the win!

 

[Deadlocked]

PicoGram for the win!

I have no idea what that means

 

[KrisReef]

I have no idea what that means

Put the bully in the pico where it can't attack any other fish!

 

[Deadlocked]

Put the bully in the pico where it can't attack any other fish!

I don't know what a pico is

 

[Andresnyc93]

Pico tanks=nano tanks, RG are usually all bark in my experience, if the other fish is bigger than them then it shouldn’t be a problem. Problem with RG Is that once they establish themselves they get territorial with every new fish addition so is best to introduce them towards the end and also if you can get your hands on a tanklimate box that’ll help the aggression go away until your new tank is ready