Firefly Dragon

Breeding
The can be bred by selecting a fire dragon to mate with a lightning dragon at the Breeding Cave/Epic Breeding Island.

Breeding a fire dragon with a lightning dragon can also result in a Scorch Dragon.

Earning Rate
Coin per minute: Level 1: 9 / Level 10: 55

Dragon Earning Rates without boosts.

Boost Calculation Guide to use with the page linked above.