Small fly (likely fungus gnat)

Common indoors near houseplants, damp potting soil, windows, and humid areas; also occurs in moist soil and decaying vegetation outdoors.

Adults consume little, often taking moisture or nectar. Larvae feed mainly on fungi, algae, and decaying organic matter in soil, occasionally damaging plant roots.

Weak fliers that are often seen walking or hovering near windows and plants; adults are attracted to light. Eggs and larvae develop in moist soil, with several generations possible annually indoors.

Harmless to people and pets and do not bite. Larvae contribute to decomposition, but large indoor populations can stress seedlings and houseplants.