description Fishing Spider (Dolomedes triton) Overview
Dolomedes triton, commonly known as the fishing spider, is a semi-aquatic member of the nursery web spider family (Pisauridae) found throughout North America. Inhabiting areas near ponds, lakes, and slow-moving streams, it is well adapted to aquatic environments. The spider primarily hunts by resting its front legs on the water's surface to detect the vibrations of prey, which include small fish, tadpoles, and aquatic insects. It is capable of diving underwater for extended periods to escape threats or pursue food.
help Fishing Spider (Dolomedes triton) FAQ
How does Dolomedes triton catch prey on the water?
The spider rests its legs on the surface and detects vibrations produced by insects or other small animals. It can rush across the water and seize prey, including aquatic insects, tadpoles, and occasionally small fish.
Can a fishing spider actually go underwater?
Yes. Dolomedes triton can submerge when hunting or avoiding danger, with body hairs helping retain a film of air around it.
Where are six-spotted fishing spiders usually found?
They occur around ponds, marshes, slow streams, and lake margins across much of North America. They are commonly seen on floating vegetation, docks, and rocks beside the water.
Is Dolomedes triton dangerous to humans?
It is not considered medically significant and normally avoids people. A defensive bite is possible if the spider is trapped or handled, but its venom is adapted for small prey.
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