Dolomedes triton (Walckenaer, 1837) Discussion

Noticed this spider in my ornamental pond. It is about 1.5" and is found resting on the floating lillypads and plants most times. Does not seem to bother the goldfish. (They are 3x larger than the spider.) The spider does not seem intimidated by the collection of green frogs that frequent the pond. I am submitting a photo to confirm identifiation. I had first thought it a pirata, but was advised by Rod Crawford, Burke Museum, Seattle that it was most likely a Dolomedes triton.