I used Fishbook all this year. It works fine for collecting pictures of fish and the bugs that caught 'em on your iPhone, but the picture function is a little buggy and doesn't include GPS data (which the iPhone photo app does normally). Nor can you use gestures to look more closely at the picture. Lastly, there is no way to export all the data into your computer, so it's really not a database per se.
So I looked around for another app and found After the Catch (http://www.afterthecatchmobile.com). It allows you to record exactly where you caught a fish by snapping the photo. Assumedly you can follow the GPS data right back to the original spot with a GPS iPhone App. You can also view lake and river maps of your trips and see little pins where your fish were caught. So far, though, no way to export the data to computer. Also, I haven't figured out a way to look at all the trips to a particular lake, say, and figure out the hot spots where you've been catching all the fish, which seems to me to be the point of these apps. I haven't used this one for more than a couple trips, though, so I might be wrong about some things, but so far, anyway, I like it the best.
Oh, and it automatically downloads weather data, temp, wind speed, direction, barometer, humidity, sunrise/set, and moon phase for each trip.
So I looked around for another app and found After the Catch (http://www.afterthecatchmobile.com). It allows you to record exactly where you caught a fish by snapping the photo. Assumedly you can follow the GPS data right back to the original spot with a GPS iPhone App. You can also view lake and river maps of your trips and see little pins where your fish were caught. So far, though, no way to export the data to computer. Also, I haven't figured out a way to look at all the trips to a particular lake, say, and figure out the hot spots where you've been catching all the fish, which seems to me to be the point of these apps. I haven't used this one for more than a couple trips, though, so I might be wrong about some things, but so far, anyway, I like it the best.
Oh, and it automatically downloads weather data, temp, wind speed, direction, barometer, humidity, sunrise/set, and moon phase for each trip.