Dear List Members,
While electrofishing on the Great Miami River in the state of Ohio,
U.S.A., we caught a common carp (<italic>Cyprinus carpio)</italic>
which was extremely deformed. The posterior portion right after the anal
fin went through some kind of torsion and developed upwards from and to a
ninety degree angle to the anal fin. The way the caudal fin is set up,
it looks as if the individual should swim like a cetacean rather than a
fish. Internally, the fish's air bladder is situated on the other side of
the body away from the torsion, and I could not find any apparent gonads.
The intestines and pancrease also looked longer and more crooked than in
a normal carp's abdomen. This fish weighed almost 4.5 kgs, and the
operculum bones (which I harvest from carp in an attempt to age them)
were thicker than in a normal carp of this size.
I'm just curious if anyone else has seen a deformity like this before,
and how common is it. Evidently from the size of this fish, it can
survive with this abnormal condition, and hopefully I can find the time
soon to estimate the age of the fish from hard structures. This is most
probably the most wierdly deformed fish of this size that I have ever
seen. Has anyone else seen a deformity like this one before, and does the
condition have a name?
Frank A.P. Buschelmann
Department of Biological Sciences
University of Cincinnati
PO Box 210006
Cincinnati, Ohio 45221-0006
[log in to unmask]
"We are young
Wandering the face of the Earth
Wondering what are dreams might be worth
Learning that we are only immortal
For a limited time."