I have a female German blue ram and want to get a mate for her. Does the male need to be larger? The tanks a 55 gallon if that's needed, I thought I was pretty straight forward in my question.
"I have a female ram" is very vague. with so many species of rams, it is important for us to know exactly which species.
from my experience, german blue rams tend to stay the same size across both genders. when you do pick up a male, be sure to quarantine him, and then condition both the male and female with good food before you start your breeding attempts.
when you specifically ask for a male when you already have a female, and use the term 'mate' in your opening post, we are going to take that as you want to breed them.