long and tiny red bathroom worm on the wet ceramic tile floor.

red worm bathroom drain tubifex sludge sewage segmented naididae tubificida tubificid wet floor water animal biology nature macro underwater wildlife closeup background annelida fresh caudata tailed amphibian vertebrate salamandridae amphibia chordata endemic lissotriton italicus bacteria salamander leeches tropical fauna brown aquarium sediment bloodworms pulcher dirty slender ecology wild annelids lugworm