Fire- Ash
Wyvern
The Wyvern is a highly sought-after massive flying dragon that can overpower most creatures it faces. The deadly Wyvern, which is only tamable by stealing and raising as a baby, can be found in four varieities — Fire, Ice, Lightning, and Poison — each of which have distinct attacks.

Name ideas for your Wyvern from ARK players.
Zippy zapper
Puff the magic dragon
Ice:Frost
Fire: Zuko
If fire :inferno
If Ice fluffy or mittens
If fire firebender
Fire wyvern heatwave
Lightning: Zeus
Fire: Pyro, Inferno, Moltres, Spicy Boi
Nightmare if it's a black
Charmander
Grim Match stick (Cuphead)
Trogdor
Toothless
All black fire:ashes
Black lightning:black light
Normal poison:spidder
Fire:natsu
Ice:grey
Amber
Bob