The Proto-Indo-European word *dhĝhuhₓ-
Word *dhĝhuhₓ-
Meaning fish
Synonyms *dʰĝʰu-, *peisk, *pik̂sk̂os

Comments
Mallory J.P. and Adams D. (2006)

Other words that might be of interest
*k̂on- ‘shell’, *laks- ‘salmon’, *karkr(o)- ‘crab’