close-up of the protoreaster linckii in the aquarium general view. keeping fish in an aquarium

african aquarium background clams color colorful coral corals design dried eat fish habitat habitats info invertebrates knob life linckii marine nature ocean oreasteridae pacific pool protoreaster rameshwaram rare red reef salt sea season soft specie species spine spined spiny sponges star starfish stars trade tribal tube valvatida vibrant vulnerable water worms