Clinostomid Metacercariae (Clinostomidae Lühe, 1901) in Fishes of Lake Tana (Ethiopia)

A study of 2536 fish specimens of 22 species from Lake Tana in Ethiopia has revealed the presence of five species of clinostomid metacercariae represented by two genera: Clinostomum complanatum (from Enteromius humilis, E. tanapelagius, and Garra tana), Euclinostomum sp. and Clinostomum brieni (from Clarias gariepinus), and C. phalacrocoracis and Euclinostomum heterostomum (from Oreochromis niloticus). Morphological descriptions of the detected metacercariae, including the indication of their occurrence, mean invasion intensities, and tissue-use, are given.