Tompot blenny Tompot blenny The tompot blenny ("Parablennius gattorugine") is a medium-sized blenny growing to about , part of the large family of blennies that live on the seabed of rocky areas in shallow water (down to ). The tompot blenny is found on the northern, western and southern coasts of Great Britain and is unusual on the east coast, although it has been seen on wrecks off the North Norfolk coast. The species is also present in mainland Portugal, in the Mediterranean Sea, the Black Sea and the Sea of Marmora, and around the Azores and Madeira. The fish are very
Round goby invasive nematode "Anguillicoloides crassus". In the Vistula Lagoon, the most abundant parasites of the round goby are nematodes "Hysterothylacium aduncum" and "Anguillicoloides crassus". 25 species of parasites are noted in the round goby in the Great Lakes. The trematode "D. spathaceum" is most abundant core species overall. Also the cestode "Proteocephalus" sp. and the trematode "Neochasmus umbellus" are rather abundant. The round goby may circumvent more of the metacercariae of "N. umbellus" from completing their life cycle. The parasite “load” on the invasive gobies in the Great Lakes appears relatively low in comparison with their native habitats, lending support to