red knob sea star protoreaster linckii

africa african animal aqua aquaculture aquarium aquatic asteroidea background beautiful bubble carnivore closeup color colorful decoration diani dream elegant environment exotic fish flora flower indonesia indopacific isolated kenya knob knobbed life linckii maldives mariculture marine nature not ocean oreasteridae photography protoreaster red reef reefsafe saltwater sea seastar species spine star starfish tank tropical under underwater water wildlife world