Got two 4" and 3" possibly a pair as both looks different. I guessing Vieja synspilum but not so sure as they are still young and not really familiar with viejas except vieja argentea. I got them both for $10 each.
The 4" could be male
The 3" could be female (Sorry for the dirty tank. I'm upgrading filter)
The 4" could be male
The 3" could be female (Sorry for the dirty tank. I'm upgrading filter)