Tetrad-forming cocci were isolated from 17 kinds of fermented fish, meat, vegetables, and other materials in Thailand. Out of 58 strains identified, 22 were Pediococcus perltosaceus Mees, 2 were Pedicoccusacidilactici Lindner, 26 were Pediococcus halophilus Mees, 4 were Pediococcus sp., and 4 were "Tetracoccus" sp. They were widely distributed in fermented products in Thailand, and play roles in souring and ripening.
