Sentence:  a pike says to the pike-folk / a whitefish asked an <WSD>ide</WSD>, a / salmon another salmon: / ‘Have they died, the famous men / have Kaleva's sons been lost […]?' 
Meaning of the word marked with <WSD> tags:  A freshwater (fish) of the family Cyprinidae, found across northern Europe and Asia, especially "Leuciscus idus". (from 19th c.)