Linebreeding a few lines can help the linages you have.
The issue for wilds is, their variations are highly dependent on where they came from. Mixing an ocellata from a stagnant high pH pool and an ocellata from a clear stream would mean you're diluting the regionally developed natural genetics. Keeping strains pure is important because they are being wiped out in nature. So you have to be careful about which fish you breed together to avoid messing around with special traits that only occur in a specific locality. Some wild specimens are sold along with the name of the nearest town they were found by specifically to ensure that the buyer knows what strain they are.