I have 25 gallon lagoon mixed reef with 1 sole white lightning maroon clownfish (3” size) I’m not sure on his aggressiveness since I’ve had no other fish with him. How likely or rather unlikely will I be able to introduce another fish or 2 into my tank. I wouldn’t mind trying to make a pair of that’s my only option. But I know maroons are ruthless. What fish if any could I try I adding to my tank?