Dr. Murai Éva szerk.: Parasitologia Hungarica 25. (Budapest, 1992)

Fig. 1. Intensive fish hatchery and pre-rearing room of TEHAG (Százhalombatta). Sterlet fry pre-reared in tanks with throughflow water are well visible. On the top of the photograph, note water-conduits which are inhabited by large populations of Physa acuta snails Fig. 2. Microphotograph made at low magnification of the head of a sterlet larva infected by Chaetogaster limnaei. The helminth (indicated by the point of the arrow) is located in the nasal part of the cranium, before the eyeballs (E). Magnification = x25 Fig. 3. Low-magnification microphotograph of the oligochaete Chaetogaster limnaei. The arrow-heads point to bristles. Magnification = x50