Restriction endonuclease analysis of atypical Aeromonas salmonicida isolates from goldfish Carassius auratus, silver perch Bidyanus bidyanus, and greenback flounder Rhombosolea tapirina in Australia.
Whittington, R. J., Djordjevic, S. P., Carson, J. and Callinan, R. B.
Dis. Aquat. Org.
Isolates from goldfish and silver perch comprised an homogeneous group while those from greenback flounder formed a second group. Isolates from Australian goldfish obtained between 1977 and 1989 were indistinguishable from goldfish isolates from the USA but slightly different from a Singaporean goldfish isolate. These and other data suggest that A. salmonicida probably crossed a species barrier from goldfish to silver perch on the same farm but that farmed greenback flounder in Tasmania have acquired a distinct strain of A. salmonicida probably from wild-caught marine fish.