Long Spined Black Urchins make a great addition to your cleanup crew. Being nocturnal, you will likely not see them much with the lights on. At night, they come out and roam around the tank, cleaning your tank of leftover food and detritus.
***careful, their spines are venomous. If you touch them, it is roughly equivalent to a bee sting. If significant swelling occurs, seek medical attention.***
