Blue striped grunt of this fish. Blue striped grunts are also valued as a specimen for public aquariums. Blue striped grunt The blue striped grunt ("Haemulon sciurus") or bluestriped grunt, is a subtropical species of grunt native to the western Atlantic Ocean. It was described by the English naturalist George Shaw in 1803. Its common name comes from its blue stripes and from its habit of grunting by grinding its pharyngeal teeth. The swim bladder, acting as a resonator, amplifies this sound. The blue striped grunt commonly grows to a length of 20 to 25 cm (8 to 10 inches), and its maximum
Round goby Nord-Ostsee (Kiel) Canal. As of 2010, the westernmost site of round goby occurrence in Europe was the Lower River Scheldt, the tidal zone in the river mouth, and Albert Canal, Belgium. In 2011, the round goby began invading the fresh waters of France: the species appeared in the Rhine River (on the border between France and Germany), and in the French part of the Moselle River. In total, 52 parasite species are registered in the round goby in the native area. Most abundant parasites of the Black-Sea round goby are metacercariae of trematodes of Heterophyidae family, such as "Cryptocotyle concavum",