Hi Kevin. You can get plants from Malim Jaya. There are a few LFS there namely Ikia, North South East West (same owner as the one near Waterfall), and also another one (forgot the name) with the picture of a big Arowana near a electrical parts shop (Mandarin called "Wan Loong"). There's also one at Paya Ikan, next to a car air cond shop.

There's a huge one at Muar which is not too far from Melaka. Apparently they distribute the plants and fish to the LFS in Melaka.

Generally though, there's a group of people who are into this and we sort of know each other.