Types of gold rams ?

I have a pair of gold rams for the past 3 months. They lay eggs on a regular basis et all. However, these rams are much smaller than other rams i have seen - i guess they are around 1.5 inches. They have good colour and fairly lively. My question is what type are they. I suspect they will never get as large as 'normal' rams and they don't appear to be stunted. I do remember they were mixed in with some balloon rams so i'm wondering if they are some sort of cross breed that have balloon size but normal shape or there are other types of rams.

picture of male and female (sorry phone focus is off on the female):

 

I suspect they are still growing?

 

I have my doubts because they don't appear to have grown at all over the past 3 months but perhaps they will ?

I suspect they are still growing?

 

I have my doubts because they don't appear to have grown at all over the past 3 months but perhaps they will ?

They may differ slightly but my bolivian rams took a bit of time to grow, ( my female has grown maybe 1/4 of an inch since I got a it) or possibly you are used to seeing them everyday so you think they haven't grown when they have

 

Yours look very similar to mine, the male is around 2 inches hasn't grown much since I got him. Female is a little smaller

Had them for 3 months

 

Size has a lot to do with how/what they are fed at very early stages in life. Baby Rams were one of the few fish that I fed more than once a day. The higher temperatures they live at require more protein, more often. Of course that means more cleaning, too, but the added water changes also increase the rate of growth.

Once they have matured sexually, growth slows down as more energy goes into reproduction. That's one reason males get bigger than females; they don't have to put as much into their reproductive organs as females do.