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Sticker of Six-spotted fishing spider
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Six-spotted fishing spider

Dolomedes triton
Name means: “named after Triton, a sea god in old Greek stories and the son of Poseidon”
Eats: Other bugs and small animalsSpidersPonds, rivers and shores8 legsNot an insect, but a bug cousin

The six-spotted fishing spider is a big grey brown spider that can run on top of the water. It has a pale stripe along each side and light spots on its back. It got its name from the six dark spots underneath its body, which you only see from below.

Fun fact: spiders are not insects. Insects have six legs, spiders have eight. Everyone calls them bugs anyway!
Lives in
North America, from southern Canada to Mexico, on ponds, lake shores and slow streams
Length
0.9 to 2 cm (0.35 to 0.79 in)
females are bigger than males
Top speed
about 1.7 km/h (1.1 mph)
On foot, estimate
What does it eat?
It eats water insects and insects that fall into the water, and it can even catch tadpoles, small frogs and little fish.
For real!Photo of Six-spotted fishing spider
Picture by JeffreyGammon. CC BY 4.0, via Wikimedia Commons.

How big is it?

How long is it?

Six-spotted fishing spider about 2 cm long (0.79 in)A grain of rice about 6 mm (0.24 in)A toy building brick about 3.2 cm (1.3 in)A crayon about 9 cm (3.5 in)
as long as 3 grains of rice in a rowcould run across a dinner table in 2.1 secondsmoves 24 times its own body length every second

How big is Six-spotted fishing spider compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

It can catch fish up to five times bigger than its own body.

2

It is one of only a few spiders known to eat animals with backbones, like fish and frogs.

3

It hunts in the daytime and can wait patiently for hours until something moves on the water.

4

With her legs spread out, a big female is about 6 centimetres across.

5

People call it the dock spider, because it often zips away into the cracks of boat docks.

you asked

Most asked questions about Six-spotted fishing spider

?Can a fishing spider really catch fish?

Yes. It can catch small fish, tadpoles and frogs, even fish up to five times its own size.

?Can spiders walk on water?

The six-spotted fishing spider can. It scampers across the surface of ponds and lakes.

For bug experts

Scientific name
Dolomedes triton
Group
Spiders
Family
Dolomedidae
Classification
Arachnida > Araneae > Dolomedidae
Lives on
North America
Also known as
Dock spider

Where the facts come from

  1. Six-spotted fishing spider (Wikipedia, CC BY-SA 4.0): what it looks like, where it lives, what it eats, sizes and fun facts, retold in simple words.
  2. Picture by JeffreyGammon. CC BY 4.0, Wikimedia Commons. The round sticker of this bug is cut from the same picture.

If we got something wrong, sorry, we are bug fans, not a science journal. Tell us at [email protected] and we will fix it.

More from the same group: Spiders

Also at home here: Ponds, rivers and shores