Crab-eyed Goby displaying its colorful fins, Papua New Guinea.

gobiidae papua new guinea signigobius biocellatus animal themes animals in the wild aquatic close up color image crab eyed goby dorsal fins fin fish goby horizontal ichthyology marine biology nature no people one animal outdoors pectoral fins photography reef sea sea life side view signal goby species tropical climate tropical fish twinspot goby two spot goby undersea underwater wildlife zoology