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[casinoJim]

Ok so I'm trying to decide what pound test (line) to use this year when " bing" a thought hit me ( ya it hurt!   )

 How much do fish weigh in water? When you take into consideration the bouyancy of the fish... well is their a formula? Does salt water change this?

CJ

[DragonSpeed]

 How much do fish weigh in water? When you take into consideration the bouyancy of the fish... well is their a formula? Does salt water change this?

It depends a lot on CURRENT.  2 lb fish coming in sideways (for example foul hooked), in a strong current can feel like it's 30lbs or more.  While a 30lb fish coming towards you has no "weight" at all  There in lies the challenge young grasshopper.

[Fish Assassin]

Need more information:  What are you fishing for ?

[Spudcote]

A fished "wight" in the water can be dependant on many factors, one of which is the shape of the fish, for example, a salmon is longer and slimmer, wheras a carp or catfish tends to be wider. Also, I don't know how much of an effect this would have, but the sline of a fish may give it less friction in the water. Some fsh, and I've seen them do it, will actually open their opperculums (spelling...), these are the "gill flaps", and spread their fins to give more resistance. Many types of fish fight in different ways, such as sting rays are known to "suck" themselves to the bottom, and some salmon simply turn sideways into the current and drift downstream (I've been spooled by a fish doing this).

I hope this helps to answer your question

[casinoJim]

I'm not talking about the fight , or current.

A 10 pound fish in the air weighs well 10 pounds.

Now just like people in a pool don't weigh the same (because of bouyancy)

Fish in water also won't weigh the same. I'm sure it would depend on the fish ... fat content,, size of air bladder etc.

I am curious ( I don't know why & ya I'm feeling kinda stoopid for bringing this up ) but ( deep breath and marching bravely on) if there was a formula about the typical bouyancy per species.

Now 15 pound test line would/should lift a 15 pound fish in the air.... but not a 20 pounder... the line would snap.

In the water 15 pound test should land a 25 pound fish easily ( depending on the skill of the angler )

I suspect the difference probably has something to do with bouyancy.... so

I was wondering if there was a formula to figure out the average bouyancy per species.

Maybe I'm too tired ... night
CJ

[casinoJim]

Now that funny!

[otto]

 Lots of variables come into play. You also need to take into consideration the rod (qoute from max)

now when you use a fishing pole like i do (20' long), it is basically a HUGE spring/shock absorber. thats why i can (and am) using 1/2 pound test mono and can land fish upwards of 15 lbs with a net of course. the pole absorbs all the shock of the fish fighting. i have yet to snap the 1/2 lb test line and have fought and landed some fairly large fish.

more food for thought......