It has the distinction of being the very long and thin cylindrical body, pink or red. It is also coated with a viscous film and measures between 20 and 30 cm for a diameter of 3 to 4 mm.
Whole remain several weeks in an aquarium and a bubbler in a mixture of 1/3 water to 2/3 of sand, making sure to change the water regularly. It attracts mottled and red mullet.
Conservation is 2 to 4 days at a temperature 14 to 16 ° C.
It is a perennial and night to perfect thanks to its phosphorescence. Mainly clear or dark green color, his body is semi-cylindrical. Its size varies between 15 and 25 cm.