yah stunning.
found the answer to your q
Serkan answered it on another forum when i asked a few months ago
"Currently on the allowable import list we only have Aphyosemion (which within it encompasses genera Fundulopanchax, Chromaphyosemion, Mesoaphyosemion, Roloffia etc.), Epiplatys and the Asian genus Aplocheilus.
The Eurasian genus Aphanius, South American Rivulus and all the peat spawning genera from there (Simpsonichthys etc.), and the African peat spawning genus Nothobranchius are not on the allowable import list.
I would imagine for the Rivulus it is just a case that no one tried to put it on the allowable import list as it occupies the same niche as Aphyosemion in Africa, but it just happens to be from South America."