I've heard of these fish being very susceptible to stray electric
currents from faulty heaters and powerheads, but my first guess would be
an internal infection of some sort as Elaine mentioned.
--
www.NetMax.tk

wrote in message
ups.com...
Thanks for the reply. It was probably actually closer to 4 weeks than
3, and I had him before the Discus.

I have no doubt he may have had some illness, but I'm wondering whether
anyone has had experience with a ghost knifefish dying without
displaying any symptoms ahead of time. I'm puzzled because literally
10 hours before I found him, he was swimming around eagerly, eating out
of my hand, and looking very healthy.

Thanks for any information,
Wes

Elaine T wrote:
wrote:
Hi all...
This morning, when I woke up, my 5-6 in black ghost knife fish was
dead. The day before, he had been eagerly swimming about, eating,
etc.

My tank is a 55 gallon planted tank. There is driftwood that
creates
plenty of hiding spaces for him. I only would see him when he
wanted
to come out, but that was still pretty often as he warmed up to his
surroundings. I've had him probably 3 weeks.

The water quality is what I would consider very good: 0 ammonia and
nitrite, of course, but nitrates are also quite low. Yesterday
(before
he died) they were between 5 and 10 ppm. The water is slightly
acidic
(6.6-6.8) and quite soft--- about 3 degrees. I have 4 juvenile
discus
in the tank that seem happy, which is why I keep the water so
pristine... (and, as I understand it, these condtions should be
perfect
for the black ghost as well). So, any theories? I'm hoping to get
another of these great fish in the future, but I'd like to ponder
what
went wrong with this one first.

Thanks very much for any suggestions,
Wes

Hmmm... Three weeks is short enough that he could have had an internal
infection of some sort from the fish store. It may not have anything
to
do with your tank. You're very brave to put an unquarantined fish in
with discus.

--
Elaine T __
http://eethomp.com/fish.html '__
rec.aquaria.* FAQ http://faq.thekrib.com