What type of camera do you use to photograph fish?
I use a Kodak Easyshare C190. It's got 12MP and 5x optical zoom. It does a relatively good job if I'm careful with taking the pictures. My mom has a Fujifilm FinePix S3200 which has 14MP and 24 optical zoom, but she never lets me use it [although she never uses it herself, let alone that she doesn't know how]. I used it to photograph one betta and it turned out great! Here's the difference.
My cats taken with the Fujifilm
My iPod Touch 5th Generation [5MP]
Honestly, I haven't mastered the Fuji yet, but I'm trying.