Hi tyrano34.
Thank you for showing video clip of the pairing of S.atropurpureus.
The pairing scene in the natural environment is very rare.
I looked at the habitat of Stiphodon in several places.
Most surface of the bottom of a river is covered with algae in their habitat.
They live on a carpet of the food.
Water plant is not necessary for Stiphodon directly.
However, a lot of leaves are very effective as an algae field.
The surface area that algae can grow in a normal water tank is too small.
I think that Anubias.nana is suitable most as an algae field.
Even if all leaves are covered with algae as for Anubias.nana, it does not wither.
But most aquarists cannot permit a leaf covered with algae.
There is the individual which comes to eat other bait by starvation.
S.percnopterygionus is kept for nearly 10 years, but I have not seen the form that they eat feed besides the alga yet.
In other Stiphodon, there are many individuals which do not eat anything other than algae.
Preparations in an enough alga field are most important for them.
They prefer to the ugly leaves full of algae to the vivid green leaf that man feels to be beautiful.
During the morning of the winter, direct rays of the sun hits the second water tank.
Thus propagation of algae gains momentum with the water tank.
As a result of having eaten enough algae,
the females which laid eggs two months ago laid eggs again.
The first pair of Rainbow-color.
Unfortunately I overlooked the courtship dance.
The female stomach which swelled out with an egg becomes flat on the next day.
I cannot watch a male figure now.
He protects eggs in the nest for a few days.
The second pair of Rainbow-color.
While the first male stay in the nest, this male has a chance of the breeding.
I show below the mosaic of the courtship dance.
The female of S.percnopterygonus laid eggs, too.
Though her do the courtship dance with this youngster,
the last breeding partner is not this youngster.
This male does not have a proper nest with the youngster that the first dorsal fin does not yet grow.