Tiger barb odd behavior

I have a tiger barb that seems to do the same thing. After eating, it will
start to swim nose down, and appear to be in distress. Give it an hour or
so, and it is back to normal. Likewise, when it started to do this, I was
expecting death within a matter of days, and this has been over a year now.
Don't know what the deal is with it though.

"D&M" wrote in message
...
This has nothing to do with the drama I had recently, same tank, not
related. (so I think)

I've had one tiger barb that has persistantly swum (I'll make that a word
for this post, my rules, hehe) verticle to the jager water heater for over
the last two weeks. At first I thought it was some maiting ritual with his
own reflection, but it's going over two weeks now.

I at first kept a close eye out for dropsy, but it hasn't swollen up,
comes
out to feed and everything, but breaks from the school and sticks verticle
to the heater. Every now and then a grn tiger will join him for a few
minutes doing the verticle swim (which appears quite difficult to do), but
then breaks away to rejoin the school.

I've raised these guys since they were 1/2" in size, I'm just curious what
this behavior is all about.

Cheers