You guys are good - yes it was koi teeth and yes it was egg stripping now try this one -



Chris

That looks like fluke that has been mirror imaged or maybe it is 2 flukes lying next to each other.

Hi Wayne

I think you are halfway there
It looks like the hooks that the body fluke uses to attache itself to the fish (one fluke )

Christie

Hi Chris, I have renamed your image. With all three images, one could right click on the image and if you then click on properties, the answers were in the name of the image.

Ha ha - so thats how the buggers - oops, sorry koi keeping gentlemen, identified them so quickly ......

You learn something new in this hobby everyday ...
Thanks Paul

Ja, paul gee al die geheime weg.

Yes - its the busnisses end of a fluke

Its an electronic microscope view of the main hooks of a flkue



On this full picture you can see the hooks at the bottom of the fluke. You can also see the smaller hooks around this area


An electron microscope view of the smaller hooks from the top


It's these large and small hooks that penetrate the skin and gills that cause the damage. Many scientists believe that flukes carry harmful bacteria and once the hooks have penetrated the skin and gills bacteria has a path for invasion. Remember that ulcers are often caused by damaged areas on the skin which allows bacterial invasion.

Chris