"I bought these large natural black rocks because I wanted something to help decorate my Axolotl's tank. Axolotl's are large aqautic salamanders and will eat anything that can fit into their mouths, and they have very sensitive skin. So small rocks or gravel were out of the question! After looknig around for somethnig safe enough I found these on sale at my local petco. I bought 2 bags because there are only a few in each bag. (about 7 rocks) .
My Medusa loves them! They match perfectly with the black lid on her tank and with her black skin. She loves to hide along the rocks as she hunts done her prey.
Great for any tank with fish, salmanders or to add to any reptile tank for interest."