I've just revisted this thread and found that my entry above might be unclear to other readers. As I can no longer edit it, I thought that I should make it clear that the description (shown again below, with changes in brackets) refers to Nazeing fish.
"The effect (being pulled out from the body) is to make it (the lips) look more like a beak, although maybe a little rounded at the end.
The second major difference that I see is that (with Nazeing) there are two pairs of fins used to balance the fish on, with the tail held clear above the display area - although this is difficult to visualise on the drawing, once you know, you realise that there is an angle to the one shown at the back, whilst it is not possible to show/see it's pair. Even if it were one fin at the back, the tail would be held higher than the surface the fish sits upon.
Lastly, the positioning of the fin near the eye (and its size) is crucial."
To the Moderators: Is there any chance that if there has been no reply to an entry then it could be edited at any reasonable time afterward? I occasionally find the one hour limit problematic. Only provided it was referred to as having been edited by the person changing it of course!!