swimming in circles, nose to the bottom

"Jules59 via PetKB.com" u25279@uwe wrote in news:6617664f13288@uwe:

question...I have a flying fox in this tank, that we removed from our
large tank because the other fish were attacking it and one of it's
tail fins was injured (looks like it was bitten off). We found the

Carlrs's suggestions for treating the injured fox are good. The
Methylene blue dip will help kill any attached opportunistic bacteria
and fungal spores, and the Mela/Pimafix treatment will help prevent
further infection in the quarantine tank (or wherever you are treating
it).

I would also suggest using aquariums salt for this fish as well. The
aquarium salt will help prevent a true fungal infection, but more
importantly it will help offset the enormous internal osmotic imbalance
this injury will have caused the fish.

A wound presents water with an easier route to flow into the fish's body
than just its porous skin. Aquarium salt will increase the hardness of
the water and reduce the osmotic stress on the fish's kidneys and gills
to rid itself of this excessive influx of water.

Reducing the stress level is key for the recovery of any sick or injured
animal.

Quarantine tanks are great for these situations too because not only are
they easier to medicate than a large maintenance tank, but they also
remove the fish from the environment that directly or indirectly
generated the stress the fish is experiencing in the first place.

"Jules59 via PetKB.com" u25279@uwe wrote in message
news:660be06df6350@uwe...
does anyone know what causes a fish to swim in circles with it's nose to
the
bottom? obviously it's in distress, in fact I'm sure it's dying, but is
there any danger to my other fish? Is this contagious? Help--this is my
first tank.

Thanks.

--
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Mate before you do anything else you need to do a nitrite test on your
water.
If there is ANY nitrite in the water you need to back off on the
feeding/fish buying and ride it out.
Clean your filter sponges in aquarium water.
How long has the tank been setup and how do you clean/filter it?