GES is determined via fish community trophic index. GES is achieved if the index value is >0,6.

GES is determined via abundance of coastal Fish key functional groups: abundance of cyprinids in monitoring catches and abundance of piscivores in monitoring catches. GES is achieved if both of the indicator values are >0,6. In addition, GES is determined via balance of lower guilds. GES threshold value is two times of the long term standard deviation. If the indicator value differs more than two times the long term standard deviation the GES is not achieved. GES = > 0,3 ja < 0,7.

GES is determined via mean maximum length across all fish species found in monitoring catches (MMLI). GES is achieved if indicator value is >0,6. In addition, GES is determined via abundance index of large (TL>250 mm) perch (Perca fluviatilis) in monitoring catches. GES is achieved if index value is >0,6.