I also had some red-tailed you-know-which-fish do the same - again probably stress related from being the smallest in the tank.
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From: Doug Collom[SMTP:dcollom at powerup.com.au]
Reply To: rainbowfish at pcug.org.au
Sent: Thursday, May 01, 1997 10:16 AM
To: rainbowfish at pcug.org.au
Subject: Re: [RML] Goyder rivers
Adrian,
I've had two fish get the black head, one was a boesmani, which had only
the right side of the head go black, and lived like that seemingly
otherwise well for over a year. No other fish in the tank showed any signs
of ill health. That was about 5-6 years ago.
The other fish got a more completely black head, and died after a couple of
months. This was about a year after the first fish died. Unfortunately my
memory is not good on what it was, I keep changing my mind on the species,
but I'm sure it wasn't a tri, and I'm pretty sure it was an Australian
fish.
Attachment Converted: c:\neudora\attach\RE [RML] Goyder rivers