Middle of the night and I was checking on "critters" came across what looks like a sea urchin, green body with brown spines, about 3/8" around and fast moving, turned on the light to get a pic and he booked. Anybody know what it is?
cant tell what it is but urchins are nocturnal animals, when i had one it would rush behind the rocks when the lights would turn on but that was when he was first introduced into my aquarium, i suggest to catch it and take a closer look to figure out what it is
I think I have a couple of them in my DT, cam ein on the last shipment of LR. Really interesting, but impossible to catch on film. From what I was able to see, it's some type of echinoderm.
