Wot no fish?

This is the world of tropical fish.

But my attempt to capture them was a disaster.
The store had a couple of hundred tanks full of them.
But, 1. They never for a moment stop moving.
2. The lighting was very difficult even though I tried various white balances.
3. I was trying to take them through glass.

They all got deleted. Next time I must work out the technique before hand rather than on the spur of the moment.

Any Suggestions welcome.