I find Stephanoceros fimbriatus rarely in the Simmelried and in the Mühlweiher Litzelstetten but very often in the pond of the convent Hegne. There I find the specimens exclusively on the pinnate leaves of the water hose (Utricularia vulgaris) and the water milfoil (Myriophyllum spec.). The specimens are easily recognized and identified by their size and unique shape.

The 5 tentacles with long cilia form a kind of catching basket. To catch prey, the tentacles are spread so wide that prey either actively swims into them or they are driven into the catch basket on contact with the outer long cilia. Upon contact with a prey organism, the cilia perform a whip-like movement. Once the prey is inside the catch basket, the tentacles close and the prey is directed into the vestibule and from there into the proventriculum with the aid of shorter cilia located on the inside of the tentacles. At the bottom of the proventriculum the trophi are located, which grab the collected prey organisms one by one and crush them to transport them into the stomach below (s. fig. 4 a). Prey organisms are algae, ciliates, small rotifers and even small gastrotrichs.