dark is good. he is one of my f1 rotkiel juveniles about 2". the others were bought as greens but so much orange not so sure. big severum fan hope your little guy gets better.
Yours are small though right? Severums don't grow fast at all...you would have plenty of time...and u never know that small growing up together you have a better chance of them getting along in the long run.
The male is about 4 inches and the female around 3, but they've laid eggs before so my main concern would be the abuse of the 3rd severum by the breeding pair.
Lol well right now they'd be good in a 20 or so lol. They are really nice looking...im getting another 150 for my severums lol...300 gallon of severum lol.