( ( If ( it ( is ( ( the ( right species ) ) ( of fish ) ) ) ) ) ( , ( ( the larvae ) ( ( stay on ) . ) ) ) )
(ROOT (S (SBAR (IN If) (S (NP (PRP it)) (VP (VBZ is) (NP (NP (DT the) (JJ right) (NN species)) (PP (IN of) (NP (NN fish))))))) (, ,) (NP (DT the) (NN larvae)) (VP (VBP stay) (PRT (RP on))) (. .)))
If it is the right species of fish, the larvae stay on.
(ROOT (S (NP (NN Fish)) (VP (VBP hatch) (PP (IN into) (NP (NP (NN larvae)) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (ADJP (JJ different) (PP (IN from) (NP (NP (DT the) (JJ adult) (NN form)) (PP (IN of) (NP (NNS species)))))))))))) (. .)))