Scat proof plants...

I was wondering if anyone knew if there are any plants that can live in 
brackish water which won't get eaten by a Scatophagus ("Scat").  Is Java 
Fern (microsorum pteropus) safe?

Thank you for your time and you can email me directly with your 
Walter P. Wu
Home:	Chunker at worldnet_att.net
webpage: http://www.hr.duke.edu/users/wuw