That's an unusual combination as Bolivians thrive at 23cc/73-74f, and ramirezi like 27c/lower mid 80sf plus for a healthy life. It's a huge environment gap.
Sometimes I look at where those two fish come from, and wonder how many species of Mikrogeophagus must have gone extinct between their habitats for them to have that spread. They are well over a thousand km apart. I've always figured there were more Mikrogeophagus out there, but maybe not. There is a story there we don't know. How do two similar, related fish occur so far apart with no known relatives in between? They must be ancient fish, remnants of a once widely distributed group, or the descriptions are wrong and they aren't that close. The science looks good though. Weird mysteries.
I got my paws on wild caught rams a couple of times. The linebreeding really transformed them. The wilds are very pretty, but lack the blues of the "German Blues". Their shape seemed different too, without the flat flanks of domestics. They are feisty, active sparkplug fish - the life of the party. Domestic rams don't have the same fun behaviour. Wild rams are like 8 month old puppies.
You see how selection for colour can also affect shape and behaviour when you look at wilds and domestics.
