My zebras, have had them 3 years ish now.
Bought from aqautic shop, supposed to be a wild caught pair.
They have grown steadily over the time I have had them.
They have not shown any interest in breeding, other than the larger of the two occasionally chases the smaller one.
They do appear to me to have different body shapes.
I am going to start to alter the tank environment to try to encourage some action, caves etc.
Kept in HMA water 26 degrees