Pencil Urchins (Eucidaris tribuloides) are a popular invert for saltwater aquariums. They are also called slate pencil urchin or red pencil urchin. These inexpensive urchins usually go for around $10-$15,…
Read More
Pencil Urchins (Eucidaris tribuloides) are a popular invert for saltwater aquariums. They are also called slate pencil urchin or red pencil urchin. These inexpensive urchins usually go for around $10-$15,…