Abstract
A series of epizootics caused by Trichodina fultoni is reported. Fish kept in running water at 12°c showed severe signs of trichodiniasis. At 12 °C T. fultoni lacked strict host specificity, but demonstrated some preference.A redescription of Tripartiella burstjormis, using the silver impregnated techniques, is given. This ciliate is reporred from Acantharchus pomotis. Trichodina nigra is reported from the same host.
