Sprite Darter Hatchling

Zone Drop: Feralas
Drops From: The list of NPCs this pet can drop from, along with their drop chances, can be found on Wowhead here.

People tend to farm Noxious Whelps, which also drop the Emerald Whelpling.

Usually, use Moonfire to set up the weather that buffs Arcane Blast. You may use Evanescence to avoid damage for two rounds if you are faster OR use Life Exchange when there is max difference between your health and your opponent’s for a big heal and damage at the same time. For spammable damage, use Arcane Blast.

Discussion: As a Dragonkin, the SDH takes less damage from flying attacks, and with its own Magic attacks it deals extra damage to flyers. This makes it a “double counter” to flyers, and should be one of the first pets you think of when facing them.

The most common gameplay is to set up Moonlight with Moonfire, and repeat when it expires. Other than that, you can use Arcane Blast. This is straightforward. The middle slot is the tricky bit.

If you are faster, you will probably take Evanescence, which will provide two rounds of avoidance, which you should use to dodge big attacks. If you are slower, you will prefer Life Exchange. When slower and using Life Exchange, the trick is to wait until the next attack will reduce your health to a minimum without killing you, while your opponent is at high health, and then use it to destroy him while bringing yourself almost back to full. This may require some planning and mental arithmetic!

The Flying attacks Slicing Wind and Cyclone can be taken instead of Arcane Blast and Moonfire, either to set up a Clonedance in PvP with Cyclone, or against an Aquatic target, but against Aquatics there are usually better options than the SDH.

While the SDH is very strong against Flyers, its lack of a consistent powerful heal makes it less useful for wild battles.

See also the Nether Faerie Dragon, a wild pet which shares the same moveset, with different stats. The NFD can replace the SDH in almost all strategies, and it's a lot easier to get.