Agreed. My 14 inch rhom is in a 75g and is perfectly happy. As far as I'm conscerned, people place too much emphasis on just how much room a big rhom needs. How many people would consider putting a 14 inch Oscar solitary in a 125g? Probably none. And a Oscar would demand more room than a rhom of equal size.RhomZilla said:I would have to say 75+ gal.. anything bigger would be too boring to have a big tank and one fish..
I agree, RCR!For a 12 incher I wouldn't be satisfied with anything that has a depth less than 18". This because a lot of tanks I see have depths of 13" and the turning radius would be restricted. So I think the main factor in choosing a tank for me would be that the depth needed to be at least 18".