








That's my finger, for size comparison (couldn't find the ruler)

And finally a short video, showing their behaviour in the stock tank (please turn volume down):

Apologies that some of the pics are quite poor, but these are so tiny and active which made photography difficult! When you see them in the flesh (and on the vid, compared to the still pics) the stripes posterior of the dorsal fin are really obvious, compared to the markings anterior of the dorsal. Anyone like to hazard a guess at an ID? Burma is the definite country of collection.
Emma