What time of day was it? Each morning, the "mated pair" finds each other and will lock tails, dance, and acknowledge each other before they go about their daily routine of hunting and such.
Their courtship rituals do involve elaborate dances, tail locking, rising and falling in the water column, inflation of the male's pouch and then an egg transfer.
At the end of the movie, the fish on the right is the male. They surely are interacting, but it is too short a clip to tell whether or not it was a mating dance. Also, sorry to say, I can't tell what species they are from this movie. Maybe Kevin or Gwen, who go to the aquarium often, know this display and can tell you.
Dave
Bookmarks