FISH CULTURE

Fish Disease: Edwarsiellosis Cause: Edwarsiella tarda Bio-Ecology Pathogens: • curved rod-shaped bacteria, gram-negative character moves with the aid of flagella, do not form spores or capsules, are facultative anaerobes, and able to produce H2S. • Found in freshwater environments and sea water, infecting several species of fish include: salmon, catfish, carp, tilapia. etc.. • Transmission of horizontally ie contact between host one with another host or through water. • Generally occurs at a relatively high water temperature (± 30 degrees Celsius) and high organic matter content. • The death rate depends on environmental conditions, in very poor conditions can lead to death by 50%. Clinical Symptoms: • In mild infections, revealing only minor injuries. • As the development of more advanced disease, purulent wound developed in the ribs and stomach muscles. • Pale, bloated stomach containing a yellowish liquid or redness, bleeding of the rectum and / or depressed into the anus, and eyes