royal or regal angelfish,pygoplites diacanthus

algae angelfish animal aqua aquarium aquatic atlantic background below beneath blue bottom coldblooded color colorful coral creature diacanthus ecology ecosystem egypt environment exotic fauna fish gills green hard hardcoral image light marine natural nature nice ocean peaceful poikilothermic portrait pygoplites ray red reef regal royal salt saltwater scales school sea seascape soft species sun tropical underwater water wild wildlife zoology