We can keep ever smaller aquariums, with tanks less than 20 l/4.4 gal being aquascaped to a high standard and kept long-term stable and healthy. There are limitations concerning plant and fish/shrimp ...
I looked at other fish from Cambodia for my 63 l/14 gal aquarium and considered Yasuhikotakia sidthimunki, but these prefer more space than my 60cm/24” tank. Cross-referencing FishBase gave me a list ...