( For ( ( ( use in ) ( fresh ( or ( salt water ) ) ) ) . ) )
(ROOT (S (ADVP (IN For)) (VP (VB use) (PRT (RP in)) (NP (JJ fresh) (CC or) (NN salt) (NN water))) (. .)))
For use in fresh or salt water.
(ROOT (S (NP (JJ Fresh) (NN water) (NNS biomes)) (VP (VBP are) (VP (VBN defined) (PP (IN by) (NP (JJ low) (NN salt) (NN concentration))))) (. .)))