All float in a saturated salt solution except -
The eggs of clonorchis may be demonstrated in feces or aspirated bile. They do not float in concentrated saline. REF:TEXTBOOK OF MEDICAL PARASITOLOGY;CKJ PANIKER;6TH EDITION;PAGE NO127
Clonorchis sinensis
Feilised eggs of ascarsis
Larva of strongyloids
Trichuris trichura
parasitology