Ocellate eel blenny species. This species has an extremely elongated body, its gill membranes are joineded to the isthmus ventrally. It has one, short lateral line which runs from its shoulder to underneath the front part of the dorsal fin. The body is dark brown in colour with mottled with paler markings and it has a black eyespot, smaller than its eye, located above the opercle. It grows to a maximum length of standard length. Ocellate eel blenny The ocellate eel blenny (Blennodesmus scapularis) is a species of ray-finned fish from the subfamily Congrogadidae, which is in the family Pseudochromidae. It is the
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