So far I have found only one specimen of Chaetonotus acanthodes in the Simmelried, but I cannot exclude that I missed this species earlier. The dorsal scales were still drawn with a distal incision by Stokes, but this turned out to be incorrect. A redescription of Chaetonotus acanthodes was made by Kånneby (2013) based on 12 investigated specimens. He recognized the round shape of the scales, as I also observed (s. fig. 2 b). A characteristic feature of Chaetonotus acanthodes is also that the girdle of elongated spines is below the middle of the body and that these spines are not arranged on a line. In front of this girdle the dorsal scales bear short spines and behind it they do not (s. fig. 2 a-b). Caudal to the girdle, there are also two scales with a double keel (s. fig. 3). The scales on the ventral side are small, round and bear short spines (s. fig. 4). At the posterior end four elongated terminal scales with spines are located in parallel to each other (s. fig. 5).