by TFH Magazine on January 13, 2012 at 6:55 am
The deadly cone snail is never added to an aquarium by choice, and it should never be handled. It has a powerful venom that, in larger specimens, can even kill a human. In fact, the harpoon that delivers the venom is so powerful that, in some cases, it can penetrate a wetsuit.
Although they very, very rarely make their way into the aquarium hobby, some cone snails have been found in tanks after hitchiking on live rock. If you find one, you should attempt to remove it as soon as possible without touching it, for example, by using a baited trap.
If you wind up with one of the largest species of cone snails in your tank, here’s what can happen. This is a video from the BBC taken on the Great Barrier Reef of a cone snail attacking a fish.