I saw a large Fire Urchin in a tank this week and thought it was pretty much one of the coolest things ever. It basically pulsed red inside like it had a flame inside. So I'm wanting one now. What are the plus and minus to having one in a 90 gallon. What do they eat what will they annoy
caution: this urchin is named after fire is that its spines are loaded with poison. If you get *****ed by one of the spines you?re in for anywhere from 15 minutes to several hours of stinging pain.