The difference can be very small; for instance, many freshwater fishes like
sunfish and shiners can't tolerate more than 2 ppt salinity (or 1.002
specific gravity, approximately). But different people will tell you
different cutoffs, depending on what processes or organisms you're dealing
with.
--Bruce Stallsmith
Huntsville, AL, US of A
>From: Moontanman_at_aol.com
>Reply-To: nanfa_at_aquaria.net
>To: nanfa_at_aquaria.net
>Subject: NANFA-- Freshwater/brackish
>Date: Fri, 18 Oct 2002 05:08:57 EDT
>
>Would anyone like to give a cut off point that marks the official
>difference
>between freshwater and brackish water in specific gravity?
>
>Moon
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