Where to find Ultricularia vulgaris in Singapore?

[TheCPguy]

Hi, title says it. I currently grow a U.gibba that i bought from a friend. But now i am interested in a ultricularia vulgaris, but where do i find it in singapore? Any medium-large sized traps,aquatic,hardy and easy to grow bladderwort also can. I've been googling for seeds but to no avail. Please help. Thanks!!!

[Xiaozhuang]

Random farms and petshops will have it time to time; it's not stocked as regular planted selection as far as I know