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Thread: Brackish community fish
04-07-2012, 06:09 PM #11Junior Member Guppy
- Join Date
- Feb 2012
- omaha NE
columbian or black fin sharks are also brackish fish. the interesting thing about them however is they fluctuate from fresh water as juveniles to full blown marine as adults, however they do best with brackish. also read that fluctuating the salt levels effects their demeanor.