MIC, minimum inhibitory concentration; TMP/SMX, trimethoprim/ sulfamethoxazole. Vibrio harveyi (synonym V. carchariae), is a motile Gram-negative rod which is facultatively anaerobic, halophilic and bioluminescent [1]. It is found free-swimming in tropical marine waters and commensally in the gut microflora of marine animals. It is a pathogen of marine animals [2,3], although it has been consid...