paradise fish colors

I patiently tried to get some more photographs of Perry- on the eve of his big move- but like usual, he was moving around so much that most of them came out blurry. These at least show his colors nicely:

and here you can see the fine blue freckles on his head and nape.

Backlit by the window. Alarmingly, for the first time I see something amiss with my paradise fish. There's a dark spot on his dorsal fin. No idea what it is. Well, I'll do daily wc while he's in the holding bin....

The one photo I got where he was both in focus and looking at me: