Hey Yuri, I was sorry to hear this from you... you are the African representative of the angelfish nuts club! Pinch yourself that you live within the small range of this beautiful species that cannot be exported. Success can be had with this fish... our American equivalent, Apolemichthys arcuatus, was once a fish that people had the same issues with. You will get another opportunity for sure... I met a Japanese hobbyist that collected two of these on a trip to Durban and brought them back to Japan... one survived the trip and adapted to his aquarium... you could see it in the book "Angelfishes of the World", yet unfortunately he remained nameless as they were exported illegally. Like our bandit angels, there is a healthy population of these fish at depth, along with most all of the juveniles... out of the reach of divers using standard Scuba.
Good luck in the pursuit of another and keep us in the loop!
Copps