Ontario is almost 10x the size of England, so it's impossible to point someone to where to go to find them. We could easily live 2000km apart.Maybe you could point him in the right direction of where to get one seeing as how you both live in the same place?
Personally, I wouldn't keep them with any kind of small tetra or platy. I feed fish that size to my 5-6" bichirs every few months. They all disappear by morning. Even my ropefish will eat platies.