[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Fish sex change -- it happens, Jay
AUS62 at aol_com wrote:
> Hello, Jay. I had the same experience with a female(?) Rivulus marmoratus
> many years ago. of course, it is not identical as these are
> hermaphrodites. The fish had produced viable eggs about two years and
> stopped laying eggs. Some months later it was apparent the fish became
> in color and lost its rivulus spot! Since they are hermaphrodites, I
> know how to "breed" it with another fish. Still, it had changed and I
> the ovaries had deteriorated leaving only male hormonal effect. Of course,
> marine fish the fish change sex very readily to insure a male is
> to fertilize the females. Thank goodness our sex orientation is "usually"
> firmly set forever and I like it this way.
Over seven or eight years of doing KCC maint. of WAL, I had one female that
got larger than normal and gradually took on male coloration (out of what
must have been nearly a thousand fish). IDK if she could fertilize eggs, for
I thought it was a mutation that we didn't need to propagate. Our
maintenance aim was to keep the species as close to natural as possible.
Wright Huntley, Fremont CA, USA, 510 494-8679 huntley1 at home_com
"Congress has not unlimited powers to provide
for the general welfare but only those specifically enumerated."
Did you try the quiz at:
See http://www.aka.org/AKA/subkillietalk.html to unsubscribe