Black Knobby Cucumber

Echinoderms such as cucumbers are extremely sensitive to changes in the water quality. They require well established aquariums for both water stability and sufficient food supply.

The Black Knobby cucumber is pure black with small spines along its sides. It is a useful sand stirring animal which digs down into the deeper layers of substrate. It ingests sand and digests any organic matter. Echinoderms such as cucumbers are extremely sensitive to changes in the water quality. They require well established aquariums for both water stability and sufficient food supply. Sand should be minimum 3 inches deep. It may grow up to 12 inches long and needs an aquarium at least 100 gallons.