Darwin gave a lot of thought to the strangest creatures on this planet, wondering how they had evolved from less strange ancestors. Whales today might be fish-like warm-blooded beasts with blowholes ...

A grouper fish found off New Caledonia was found to be parasitized by 12 species of microscopic monogenean worms. This diversity of parasites has just been confirmed also in the malabar grouper, ...

Metazoan parasites represent a diverse assemblage of organisms, including flatworms (monogeneans and digeneans), cestodes, nematodes and acanthocephalans, which colonise a range of freshwater fish ...