168 Xifhoplurus: David Mcintyre, courtesy of Ewtic Fish and Pet World, Southampoon. MtA. 16.8 Prinfilla: Courtesy of Dbr Select the all statements that are true about the swordtail phylogeny above. The common ancestor of Priapella and Xiphophorus evolved female sensory bias. Male sword is a synapomorphy of Priapella and Xiphophorus and their common ancestor. Priapella forms a monophlyetic group with sword tail fishes. Female sensory bias is a synapomorphy of Priapella and Xiphophorus and their common ancest.