I won't make any friends with this post, but....
I'm a focus snob. (sorry) For me, nothing detracts more from a photo than bad focus and coarse grain. Inareverie and Copperarabian are two of very few photogs here that really get consistently well-focused pics. Mo's dragonscale pics are nearly as well in-focus as those taken by more highly-regarded photographers.
Richard A's pics of his wife's big-ear shown here: http://www.tropicalfishkeeping.com/b...-116325/page2/
are exquisitely in focus and are the only examples on that thread or this one.
Shooting with ISO over 100 shows unacceptable grain in any digital camera I've seen. Shooting at less than 1/100sec shows any small motion focus problems unless the fish is stock still and a tripod or steadying device is used.
If your aperture is f2.8 max, typical of most small cameras and cell-phones, it's not likely that you'll be able to use a shutter speed much above 1/30sec unless you blast the scene with light (which can cause glare and contrast problems). It's a rare photo that will be in-focus at that setting. This is my problem, as it is with most of us using inexpensive cameras with small lenses, not megapixels.
And, just so I can offend everyone...in my not so humble opinion, portrait photos of fish are just as boring as portrait photos of people or any other subject.
What is this magnificent creature?