The autors refer to recent information on the alternate life cycle of myxosporeans (Myxozoa) approved in the last years in Oligochaete worms, stimulating efforts to study the developement of numerous known and unknown species from Myxosporean fish parasites in Brazil. At the same time Actinospore, Raabeia forms shed by Oligochaets of the Ocnerodrilidae family were reported for the first time in Brazil.
Myxosporea; Parasites; Fishs; Ocnerodrilidae
