purple siamese fighting fish for sale4 µg and then times higher. Sertraline caused a periodic, and often even total weakening of the male male type fight, which was a common trial utilized in ethological analysis on the Siamese fighting fish. In the latest study, the main positive one is proved to be the dose of 4. Siamese fighting fish hereafter noted by the average name “betta” are present in fresh water ponds of Southeast Asia. They are also bred as ornamental fish and are without problems available in pet stores around the world . Males of this species demonstrate strong and stereotyped aggression in defending their territories in opposition t intruding conspecific males .