Tilapia snyderae and Hemichromis cristatus

[levine]

I have both species of fish and wanted opinions from you all on which of the two is more peaceful and will reach a smaller adult size?

I currently have them both in a 75 gallon with some other fish. The Hemichromis are older and I have a breeding pair. The Tilapia are smaller and just starting to color up to were I can sex the biggest male.