Stonefly

Natural Habitat

Near clean, moving freshwater sources such as streams and rivers, often found on structures or vegetation nearby.

Diet & Feeding

Nymphs are either herbivorous (algae, plant matter) or predatory. Adults have short lifespans and may eat algae, lichen, or nothing at all.

Behavior Patterns

They are poor fliers and are typically found crawling on stones or screens. They undergo incomplete metamorphosis and their presence indicates high water quality.

Risks & Benefits

They are harmless to humans and do not bite or sting. They are beneficial as vital indicators of water quality and serve as a primary food source for fish.

Identified on: 4/19/2026