[Anisakis simplex (larva III stage) in stickleback Gasterosteus aculeatus from the southern Baltic region]. / Anisakis simplex (larwa III stadium) u ciernika Gasterosteus aculeatus z poludniowego Baltyku.

One specimen of III larval stage of Anisakis simplex was found in body cavity of female stickleback Gasterosteus aculeatus caught in Southern Baltic, in Kolobrzeg. In stickleback from Baltic Sea A. simplex was noted for the first time. It usually occurs in many other species of fish.