Crow Fly

Crow Fly is fishing tackle.

Source
Crow Flies can be crafted, obtained as a quest reward, or purchased from vendors.

Crafting
Floating Minnows can be crafted by goldsmiths as a level 20 recipe, producing a stack of 3, with the following materials:
 * x1
 * x1
 * x1
 * x1

Quests
Floating Minnows can be obtained as a reward from the following quests:
 * The Beast of Brewer's Beacon

Vendors
Floating Minnows can be purchased for from the following vendors:
 * Admiranda - Old Gridania
 * Arms Supplier & Mender - South Shroud
 * Evrardoux - The Pillars
 * Junkmonger - The Goblet, The Lavender Beds, Mist, Shirogane
 * Syneyhil - Limsa Lominsa Lower Decks
 * Yoyobasa - Ul'dah - Steps of Thal

Uses
Floating Minnows are used in fishing the following items: