- "A glowing Skyloft insect that only comes out at night. Its beauty is said to calm the mind."
- — In-game description
Starry Fireflies are generally calm, but will fly away or up higher if Link draws too close too quickly. The easiest way to net them is to sneak up on them slowly, using his Z-target to follow them and make sure he swings the net at them rather than at the ground.
Though they are referred to as the rarest in the skies, they are simply an uncommon sight due to the fact they appear primarily at night or in dark places like the Waterfall Cave. The best places to hunt Starry Firefly at night are Pumpkin Landing's pumpkin patch (Link can turn day into night by sleeping in one of the Beds inside the Lumpy Pumpkin) and the small beach near the bridge over the water in Skyloft. The Pumpkin Landing is the best location as it is free of enemies and Link enter and exit Lumpy Pumpkin's backdoor to spawn more Fireflies. After Link turns Batreaux into a human and enemies disappear from Skyloft at night, the beach becomes a more appealing location for hunting fireflies. They also appear on Beedle's Island at night (which can only be accessed by sleeping in the bed inside Beedle's Air Shop) and a single firefly occasionally appears inside the Waterfall Cave regardless of whether it is day or night.
Like the other insects in the game, Starry Fireflies are a component for Potion Infusion, used by Bertie to upgrade the stock potions Luv sells at the Bazaar. Fireflies are one of the ingredients in the Guardian Potion upgrade.