Damn....I thought I had the world's largest rohani barb! I have one loner that mixes it up in my stock tank, solid 6-7", but yours is a true monster rohani lol. Seems they don't need a group like so many people insist, thrive when they're odd man out.
Guy is a trooper… atleast 11-12 yrs old now. The lone survivor of an original 11. Sadly i had a few that made it to 5-6” and my rays ate them… thing is an ass tho lol. He chewed up my 40” lung a year ago maybe. He goes rounds with the knives and tinfoils. Never learns.