These are not the fish I was looking for.
Added a dozen 'nano species' Swallow Rasbora to the tank yesterday, plus one Gold Ring Hillstream Loach to hoover the algae. The latter is far prettier, and when hoovering, quite static. However, it doesn't half shift and hide when the camera comes within twenty paces.
The rasbora, on the other hand, just zip around like a bunch of oblivious kids.
On the subject of a bunch of oblivious kids, I guess it's stick-a-pin-in-the-donkey day tomorrow. I tried the Vote For Policies thing. Told me what I already knew, not that it's much help in the local situation.