I didn't know where to post this, so I figured since one is an invertebrate I could post here d: So I'm thinking about getting an aquarium going and I can't decide if I should get a blue ringed octopus or the mantis shrimp. Word on the street says the octopus is A LOT harder to keep and the shrimp is pretty simple. This obviously won't be the first thing I get, but it is something I want as soon as I'm ready. The Blue Ringed Octopus has the down side of being highly poisonous when biting, but being bit by one isn't very likely unless you try to hold it. The Mantis Shrimp has been known to actually break the aquarium glass (1/4 inch was the glass thickness that the recorded breaking was on). Thanks for any input and deterrents from these beautiful and wondrous creatures.