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        Before the actual spawning we notice the following:
 1.  The female stays permanently in a “probing” position.
 2.  The respiratory frequency and intensity of both female an dominant male increases some minutes before oviposition.
 3.  Prior to spawning the females removes vigorously her anal fin into the gravel.
 4.  The female starts the spawning gap some fractions of a second before the male.
 5.  The frequency and intensity of attacks between adults have increased significantly some minutes before oviposition.