Drain fly larva

Moist areas with organic matter, such as drains, sinks, sewers, and septic tanks.

Decomposing organic material, algae, bacteria, and fungi (biofilm) found in plumbing.

Larvae live within the gelatinous film layer of drains. They are generally sub-aquatic and breathe through a small tube at the end of their body.

Generally harmless to humans but can indicate a need for plumbing cleaning. In rare cases, they may transport bacteria from drains to food surfaces, or their decaying bodies can trigger allergies in sensitive individuals.