Yes, however not if you have any common sense.
No. Fishing spiders are hunting spiders of the genus Dolomedes.
you kill spiders
if by fishing string you mean from spiders you do this | = sticks @=string | @ | @ | @
You can't. You get string from killing spiders. However, you can craft string into wool.
you have to kill spiders
Spiders with pincers in front, like the trapdoor spider, do have a unique hunting advantage compared to other spiders. These pincers, called chelicerae, help them grab and hold onto prey more effectively, giving them an edge in hunting.
Spiders that don't use webs to catch their prey are known as hunting spiders. They actively stalk and hunt down their prey instead of relying on webs to trap them. Examples of hunting spiders include wolf spiders, jumping spiders, and crab spiders.
The greatest enemy of the wolf spider is the hunting wasp
Well spiders that make webs only make the webs so that they can catch food; I'm presuming by 'hunting spiders' you mean spiders that kill in limb to limb action and/or biting/venom - these spiders kill stuff themselves and so don't need a web to survive... Survival of the fittest and shiz! Yeah that's just my opinion, but technically all spiders are hunters since they eat other animals ;)
You cannot craft string in Minecraft; however, you can obtain it from killing Spiders. Spiders will randomly drop either 1 or 2 strings. You can also find string in some dungeons. You can also use Shears on spider's webs, to harvest String from them.
Spiders can survive for several weeks without water, as they are able to get moisture from their prey and the environment.
Short answer; yes. Wolf spiders cover several hundred species and some people refer to any brown hunting (as opposed to web-weaving) spiders as wolf spiders. I hope you're not planning to move to avoid these spiders though, they're pretty harmless.