Totally unrelated, but I was looking for aquarium decorations the other day, and met Ryan's brethren Derek. (Check the category top left)

http://www.amazon.com/Deep-Dickin-Derek-Dildo-Suction/dp/B005D7OQT6/ref=sr_1_5?s=pet-supplies&ie=UTF8&qid=1401759559&sr=1-5

Needless to say, I was impressed with the fact that it had a suction cup - meaning i could use it as an aquarium decoration ...