Shark minnow (Luciosoma bleekeri; Chinese: 布氏梭大口魚, Thai: ปลาซิวอ้าว, pla sio ao, Khmer: តែីដងដវ, trey dang dau or តែីបង្កួយ, trey bangkuy) is a species of small ray-finned fish belonging to the family Danionidae.

This fish is found in Southeast Asia from the Mae Klong River to the Mekong.

The fish is named in honor of Dutch army surgeon and ichthyologist Pieter Bleeker (1819–1878).

[4] This small fish is important in the cuisine of Thailand, Laos, Cambodia and Vietnam where it is seasonally found in great numbers.

It is commonly deep-fried, pickled or fermented as pla ra, padaek and prahok, as well as salted and dried.