Aquarium/fish Photography tips?

[Potato Patatto]

Wondering if anyone has some useful tips or suggestions on getting the best aquarium photos possible. I know there are some general ones like limiting flash or covering any windows/lights in the room (aside from the tank) that cause a reflection.

Looking for more detailed info like shutter speed, aperture, and the tank lights (colors and brightness) that some of you have had success with. I am having a tough time getting the picture quality and sharpness as high as I normally do. I posted a photo below for reference but this underwater thing seems to be a whole new ballgame. Also has anyone had success with a GoPro in the actual tank?

 

[punman]

I have had some luck with camera flash (freezes motion) but do not shoot straight at the glass; shoot at an angle so the light does not hit the back of the tank and return to the camera.

 

[TwoHedWlf]

I've usually had best results shooting in macro mode with the camera up against the glass. Flash on, fast shutter speed and narrow aperture. You still get a lot of out of focus pics that way but less motion blur at least. And they're darker pics, but you can lighten them up later.