Prawns - Western King Prawns - Greasyback Singapore Prawn Files: The Sand Prawns – Sua Lor, Greasyback, Jinga, Middle, Western King, Red Spot King Prawns Metapenaeus ensis Greasyback shrimp Sua Lor – Ang Bueh 沙卢 (lit Hut in the sand) – 红尾 (red tail) I first heard of Sua Lor