Re: [RML] praecox changing colors

Mel Robinson (mrobinsn at hillfirm.com)
Mon, 15 Feb 1999 07:40:17 -0600

This species and some other species of rainbowfish flash a bright color on
their forehead and back as a signal to other fish. Its usually used a
challenge for territory or mating rights, as far as I can tell. I found
that each species flashes a different color, some are orange, some yellow
and some red. Your right, they can turn it on and off very quickly.
Mel Robinson

-----Original Message-----
From: H. Hoekstra <hugo at greed.nl>
To: rainbowfish at pcug.org.au <rainbowfish at pcug.org.au>
Date: Tuesday, February 09, 1999 9:56 PM
Subject: [RML] praecox changing colors

>Hello,
>
>I noticed my some of my praecox sometimes light a yellow stripe along their
>back. They can light this on and off quickly. Also I noticed that 2 or 3
>of them engaged in somekind of fighting or mating ritual turned their
>dorsal and anal fins from red to black. Only a small red edge remained.
>Why do they do this and does this give any clues regarding their gender?
>
>Best regards,
>
>Hugo Hoekstra
>
>