
If you look at the top of her ventral (pelvic) fin, you can see a kind of 'skin flap'.
Here it is in close-up:

She has this on each side, and on closer inspection a few of my larger clowns have these. Haven't been able to check them all out just yet though as a lot of them are lounging about round the back of the tank



Here's a couple more pics:
Marge and Stripes in one of their friendlier moments....

And finally, Marge proving she's still as flexible as some of the younger whippersnappers!....

I'll probably be boring you all with lots more experimental pics over the coming weeks, so be prepared!

Emma