Fish intermediate host of Opisthorchis viverrini 
in Chiang Mai, Thailand

Top left: Pla Sew Bai Pai (Blue Danio, Danio (Danio) regina)
Top right: Pla Sroi Kao (Jullien's Mud Carp, Cirrhina jullieni)
Bottom left: Pla Kra Mang (Smith's Barb, Puntioplites protozsron)
Bottom right: Pla Tapien Kao (Common Silver Barb, Puntius gonionotus)

Click at each image to enlarge. Another fish below is from Sakon Nakorn, Northeast Thailand