Paul.
The photo of your Koi has enough glare from the water that it almost gives it a "watercolor" appearance. That does make it difficult to pin down what it truly is, but you've been given some likely options. The photo's of Indgrid's fish are much easier to see detail from.
BTW, most of my pictures have the same problem

As to Antonio's joking reference to "kigoi", if you had been reading around for the past few days you would know there is currently a bit of a running joke revolving around "kigoi", which is the only reason he dropped that line in. You didn't get the joke, so he clarified and gave you a REAL answer. You pursued NOT getting it, and decided that you as a newcomer with questions somehow had the authority to tell him (a far more knowledgeable poster than you are ever likely to be) that HE and his posts somehow degrade and diminish this forum.
If I came to your home, told you the paint was ugly, the furniture sucked, said you are an idiot for living there, and by the way, whatever you are cooking for dinner smells nasty, you MIGHT not invite me back. That is basically the way you acted toward Tony and JN.
This is a great board, with members from around the world including S.A. and the Netherlands. You can learn a lot here, but you haven't earned the right to tell anyone how to run this forum.