Re: NANFA-- Rivulus reproduction
Thu, 30 Dec 1999 01:05:21 EST

I'm glad the subject of Rivulus marmoratus was brought up. I've been
wondering about this fish for a while. The fact that they are the only
Rivulus species found in the U.S. coupled with their unusual reproduction
makes them unique indeed. Cool web page Bruce ; thanks for sharing! I'm
wondering if these fish might be found to occur in freshwater using the
techniques described in the web page. It states that they are "unknown in
freshwater " , but I'm thinking that perhaps methods like seining which yield
poor results with this species might have resulted in this conclusion, much
like the perception of them being rare or of special concern. The fact that
they can handle abrupt transitions from salt water to fresh in lab
experiments and they are occasionally found in brackish water would seem to
indicate that this is possible (could be an experiment for NANFA members in
the vicinity of freshwater near the Florida coast).

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