In context of overlay "Things" – Information Board – https://osm.org/node/11930610949 via StreetComplete 58.2:

Fische der Aisch - Räuber
Aal, Schied/ Rapfen,
Bachforelle, Quappe/ Ruppe
Flussbarsch, Wels
Hecht, Zander

Attached photo(s):
https://westnordost.de/p/231394.jpg