Pufferfish

History
Pufferfish have been found around the world's oceans forever, ranging from the reefs to open waters.

Behavior
Pufferfish are fairly harmless creatures when not scared. However, at the threat of danger, they will puff up and expose sharp spikes around their inflated body. These will easily inject lethal poison into any living being that touches them (or ingests them).

Appearance
They have a grey-tone belly that, when inflated, is the majority of their body. The upper half of their scales are either a deep red and orange, or a deep blue and yellow. They are only a few inches long, but contain enough poison to kill dozens of grown men.