Named seadragons after the dragons of Chinese legends, leafy seadragons definitely resemble the dragon of fairy tales. They are bony fish in the family Syngnathidae which includes seahorses and pipefishes.
Seadragons are not suitable pets for hobby collectors because they are very difficult to feed and maintain. Pang is totally dedicated to the care of his seadragons, so much so that he goes diving almost every day to net live shrimp for them to eat.
The blue dragon stores the man o' war's stinging nematocysts within its finger-like appendages, making itself equally venomous to predators. One sting from this little guy can lead to nausea, pain, vomiting, acute allergic contact dermatitis, and post-inflammatory hyperpigmentation,but seadragons aren't.
Keeping Dragons - Burke's Backyard
Blue Dragons: stunning creatures of the sea with a sting - One Earth