[Zbrafish] Mouth deformation

Lawrence, Christian via zbrafish%40net.bio.net (by Christian.Lawrence from childrens.harvard.edu)
Mon Mar 30 09:26:58 EST 2009

Yes, we see it from time to time.  I believe that it is indeed the lower jaw getting dislodged initially.  I think it is likely that there is some underlying genetic factor involved because when we do see these fish - and it isn't often - there will usually be a few fish in the same tank that develop this over time.

Christian Lawrence
Aquatic Resources Program
Children's Hospital Boston
320 Longwood Avenue
Boston, MA 02115
617.919.2738 (office)
617.730.0836 (fax)
christian.lawrence from childrens.harvard.edu

On 3/30/09 4:18 AM, "AKC" <challa.anilkumar from gmail.com> wrote:


In the last couple of days I observed that a fish in one of my tanks
have developed a strange mouth deformation.  The first thing I noticed
was that the fish has its mouth open all the time.  When I observed
closely it seemed like the lower jaw bones got dislodged.

I couldn't take good pictures, so I took this short video:

The fish with the deformity is nearer to the camera when the movie
begins.  I tried to maintain focus on the same fish.

Does anyone know what the problem with this fish is?

Thanks in advance.

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