| Gastropus hyptopus , swimming specimen, lateral view. Focus plane on the red eyespot and foot. (3) |
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| Gastropus hyptopus , slightly compressed specimen. The arrowheads mark the duct of the retrcerebral organ. Also visible is the conspicuous eyespot. (2) |
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| Gastropus hyptopus; ventral view; focus plane on the ventral foot opening; specimen from (1) |
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| Gastropus hyptopus, trophi. In contrast to Gastropus minor the tips of the rami have 5 dents (arrowherads). |
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Location (3): Haselbecke,Felderbachtal, Hattingen, NRW, Germany, pond |
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| Habitat (3): plankton |
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| Date (3): 17.07.2022 |
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| Location: Anhausen near Augsburg, Bavaria, Germany; Fischteiche (1); Hattingen Felderbachtal, NRW; Germany (2) |
| Habitat: Plankton (1); (2), 3 |
| Date: 10.8.2012 (1); 01.05.2020 (2) |
