My Question is could it be a rio or arroyo
Do you have a reason to think it is? Do you know the pairing?
Just because of rio and arroyo makers.
I hope somebody have enough knowing about it.
Your guessing based on markings not arroyo in the actual pairing? And what markers are you seeing that leads you to believe the arroyo gene is present?
Without knowing the parents or anything it would be 100% guessing,