Clownfish Breding?

[Radiography14]

I HAVE A 20 GALLON HIGH TANK. ONE BLACK CLOWN AND ONE ORANGE PERCULA CLOWNFISH. NO OTHER FISH. THEY SEEM TO TRYING TO ACCEPT EACH OTHER . HOW DO I KNOW IF THEY HAVE BECOME A PAIR? WHAT ARE THE BREEDING BEHAVIORS? ANY BODY GOT SOME INFO ON THIS ? ANY GOOD ARTICLES?

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