Lyonsi are not near as aggressive as the other fish in your community but in a 300 gallon tank they might be okay. Vontehillo are definitely aggressive enough though.
My favorite fish is my 9" F1 Male Lyonsi. I recently sold my 6" F1 Male Vontehillo but I enjoyed him as well. Gage has large Lyonsi available. I'm told a Male and two females is the best way to get a pair with Lyonsi but I'm not sure about pairing Vontehillo.
My favorite fish is my 9" F1 Male Lyonsi. I recently sold my 6" F1 Male Vontehillo but I enjoyed him as well. Gage has large Lyonsi available. I'm told a Male and two females is the best way to get a pair with Lyonsi but I'm not sure about pairing Vontehillo.