Thanx, but they didn't anything about the malaysian, But (again) they had info about the giant african filter shrimp - Atya gabonensis, which I also found at my LFS, an 1" long. Saddly, I've been told that this shrimp is nocturnal so it wouldn't be seen much.
I bought one of each, one 4" rosenbergii and one 1" atya. The atya go solo and the rosenbergii goes with my bichirs. If the bichirs comes to close, the GMP chase the bichirs away very easy.