Fungus Gnat Larvae (or similar worm-like insect larva)

Moist, decaying organic matter; especially common in potting soil, compost, and areas with high humidity. They thrive in overwatered houseplants.

Mainly feed on fungi, algae, and decaying plant matter in the soil. Some species can feed on the tender roots of plants, especially seedlings.

The larvae are legless and worm-like, living in the top layers of moist soil. They are highly sensitive to moisture and will move deeper into the soil if it dries out. They can be seen wriggling on the surface of soil or emerging from drainage holes when conditions are excessively wet. Adults are small, dark, mosquito-like flies that are often seen flying around houseplants.

Potential risks include damage to plant roots, especially in young plants or seedlings, leading to wilting and poor growth. Large infestations can be annoying due to the presence of adult flies. While generally considered a pest in horticulture, they play a role in decomposition in natural ecosystems.