Scanning Electron Microscope Study ofBrooklynella hostilis(Protista, Ciliophora) Isolated from the Gills of Gray and French Angelfish in Florida

Protistan parasites associated with a disease syndrome in tropical fish from the lower east coast of Florida to the upper Florida Keys were investigated. One of these pathogens inducing mortality in aquariumheld French angelfish Pomacanthus paru and gray angelfish Pomacanthus arcuatus is Brooklynella hostilis. This cyrtophorine ciliate was isolated from the gills and examined for the first time with scanning electron microscopy.