I was actually going to start with about 5 of each and once I see what changes need to be made (moving plants to make more open space, etc...) then I would add more. Would that work?
It would work, sort of, but it is not advisable. Shoaling fish should always be acquired and introduced to an aquarium together, the entire group of the species. In all cases the fish will be less stressed this way and settle in faster with less risk of problems like ich. Some species, those with hierarchial tendencies or any degree of aggressive tendencies, must be added together or real issues may emerge. This is less likely with neons and cherries, but the first point is still relevant so get the entire intended group together.
Please provide links to any data on the rams that does not agree with what I posted as I would like to see just who is saying this. The native habitat of this species is the Llanos which is situated in the catchment area of the central Orinoco river in Venezuela and Colombia. Temperatures scarcely fluctuate throughout the year. Linke and Staeck (1994) report that air temperatures range around 40C (104 F) in the shade; at 10 am on an overcast day the air temperature was already 31C (88F) and the habitat water in which this species was living measured 28.5 C (83 F) and that was the coolest water temperature after the night.
Here are some online sources of similar data:
On the cichlid forum:
https://www.cichlid-forum.com/profiles/species.php?id=421 [Temperature: 84F.]
http://www.tfhmagazine.com/details/articles/the-german-ram-mikrogeophagus-ramirezi.htm ["Mikrogeophagus ramirezi requires temperatures of 80° to 86°F (27° to 30°C). Rams are extremely sensitive to water quality."]
https://www.fishlore.com/aquariumfi...hagus-ramirezi-blue-ram-cichlid-guide.382040/
["And one of the biggest problems people face with keeping them is temperature. Chromedome52, a Fishlore member and veteran hobbyist, had this to say about it:
“The . . . problem is that most people try to keep Mikrogeophagus ramirezi at 78-80° F [25.6 to 26.7°C]. These fish live in shallow areas with little cover, and water temperatures in the wild often get above 90° F. The best temperature range for them is 82-86° F [27.7-30° C].” -quote from guru himself @chromedome52
With that knowledge, I keep mine at 84°F (28.9°C). In my opinion, anything under 82°F (27.8°C) is too cold."]
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