Grayling (and trout) size - weight ratio?

Hi all,

A post in *uk.rec.fishing.game* about the weight of a grayling made me sit
down and put together this list.
It's a length - weight ratio compilation that originally was presented by a
Swedish author of fly fishing books.

0,5 kg 34 - 38 cm ; 1,11 lb 13,38 - 14,96 inch
0,6 kg 38 - 42 cm ; 1,33 lb 14,96 - 16,53 inch
0,7 kg 42 - 44 cm ; 1,55 lb 16,53 - 17,32 inch
0,8 kg 44 - 46 cm ; 1,77 lb 17,32 - 18,11 inch
0,9 kg 46 - 48 cm ; 2,00 lb 18,11 - 18,89 inch
1,0 kg 48 - 50 cm ; 2,22 lb 18,89 - 19,68 inch
1,1 kg 50 - 51 cm ; 2,44 lb 19,68 - 20,07 inch
1,2 kg 51 - 52 cm ; 2,66 lb 20,07 - 20,47 inch
1,3 kg 52 - 53 cm ; 2,88 lb 20,47 - 20,86 inch
1,4 kg 53 - 54 cm ; 3,11 lb 20,86 - 21,25 inch
1,5 kg 54 - 55 cm ; 3,33 lb 21,25 - 21,65 inch
1,6 kg 55 - 56 cm ; 3,55 lb 21,65 - 22,04 inch
1,7 kg 56 - 57 cm ; 3,77 lb 22,04 - 22,44 inch
1,8 kg 57 - 58 cm ; 4,00 lb 22,44 - 22,83 inch
1,9 kg 58 - 59 cm ; 4,22 lb 22,83 - 23,22 inch
2,0 kg 59 - 60 cm ; 4,44 lb 23,22 - 23,62 inch

I was wondering, is there something similar for brown trout?
I'm quite aware that trout often are in different condition and as such
weighs differently at the same length.
This is also the case with grayling and the compilation above is to be
viewed as an indication of what the grayling might weigh.
Experience tells me that grayling differs less when it comes to weight at a
certain length than does trout, which in turn probably makes such a *trout*
compilation to be of less use to anyone. But still, anyone know of such?

/ Roger
Daytime engineer
Lifetime flyfisherman
If you feel like it, visit http://biphome.spray.se/angler/ for info on
flyfishing in northern Sweden, Lapland

Roger,

There are various equations for estimating the size of salmon, based on
length and girth, so there must be similar equations for trout, even for
stream trout I expect. I do not know them off hand though, sorry.

Vaughan


"Roger Ohlund" wrote in message
...
Hi all,

A post in *uk.rec.fishing.game* about the weight of a grayling made me sit
down and put together this list.
It's a length - weight ratio compilation that originally was presented by
a
Swedish author of fly fishing books.

0,5 kg 34 - 38 cm ; 1,11 lb 13,38 - 14,96 inch
0,6 kg 38 - 42 cm ; 1,33 lb 14,96 - 16,53 inch
0,7 kg 42 - 44 cm ; 1,55 lb 16,53 - 17,32 inch
0,8 kg 44 - 46 cm ; 1,77 lb 17,32 - 18,11 inch
0,9 kg 46 - 48 cm ; 2,00 lb 18,11 - 18,89 inch
1,0 kg 48 - 50 cm ; 2,22 lb 18,89 - 19,68 inch
1,1 kg 50 - 51 cm ; 2,44 lb 19,68 - 20,07 inch
1,2 kg 51 - 52 cm ; 2,66 lb 20,07 - 20,47 inch
1,3 kg 52 - 53 cm ; 2,88 lb 20,47 - 20,86 inch
1,4 kg 53 - 54 cm ; 3,11 lb 20,86 - 21,25 inch
1,5 kg 54 - 55 cm ; 3,33 lb 21,25 - 21,65 inch
1,6 kg 55 - 56 cm ; 3,55 lb 21,65 - 22,04 inch
1,7 kg 56 - 57 cm ; 3,77 lb 22,04 - 22,44 inch
1,8 kg 57 - 58 cm ; 4,00 lb 22,44 - 22,83 inch
1,9 kg 58 - 59 cm ; 4,22 lb 22,83 - 23,22 inch
2,0 kg 59 - 60 cm ; 4,44 lb 23,22 - 23,62 inch

I was wondering, is there something similar for brown trout?
I'm quite aware that trout often are in different condition and as such
weighs differently at the same length.
This is also the case with grayling and the compilation above is to be
viewed as an indication of what the grayling might weigh.
Experience tells me that grayling differs less when it comes to weight at
a
certain length than does trout, which in turn probably makes such a
*trout*
compilation to be of less use to anyone. But still, anyone know of such?

/ Roger
Daytime engineer
Lifetime flyfisherman
If you feel like it, visit http://biphome.spray.se/angler/ for info on
flyfishing in northern Sweden, Lapland

Hi Roger!

A quick search gave me these:

http://www.dnr.state.wi.us/org/water...faq/trophy.htm
http://www.cvff.org/weight.html
http://www.ogmoreriver.com/info/weight.php

and last, for salmon

http://www.letsflyfish.com/weight.htm

--
Jarmo Hurri

Spam countermeasures included. Drop your brain when replying, or just
use .

"Jarmo Hurri" wrote in message
...

Hi Roger!

A quick search gave me these:

http://www.dnr.state.wi.us/org/water...faq/trophy.htm
http://www.cvff.org/weight.html
http://www.ogmoreriver.com/info/weight.php

and last, for salmon

http://www.letsflyfish.com/weight.htm

--
Jarmo Hurri

Guys, Jarmo, Vaughan.......

Honestly, how often do you measure the girth of a fish that you intend to
release ??? ;-)
As far as I'm concerned it never ever happened.
The thing is, what I'd like to see is a table where the average girth is
what is calculated with.
That way I could quickly estimate what the fish weighs. AND if it is a big
fat old trout I can lie my ass off (within reason) and know that noone dares
to contradict me.

Any way, the links you provided does help............now if you only could
tell me the average girth.

/Roger

Guys, Jarmo, Vaughan.......

Honestly, how often do you measure the girth of a fish that you intend to
release ??? ;-)
As far as I'm concerned it never ever happened.
The thing is, what I'd like to see is a table where the average girth is
what is calculated with.
That way I could quickly estimate what the fish weighs. AND if it is a big
fat old trout I can lie my ass off (within reason) and know that noone
dares
to contradict me.

Any way, the links you provided does help............now if you only could
tell me the average girth.

/Roger



Well, geez Roger, we were just trying to help out the engineer......... and
besides, how often do you actually care how heavy the fish you just released
really weighed? It is much better to estimate, then you can add half a kilo
or so :-) No? But if you want to be accurate and cover fish growing under
different conditions you would pretty much have to measure girth as well as
length, don't you think?

Vaughan

"Vaughan Hurry" wrote in message
...
Guys, Jarmo, Vaughan.......

Honestly, how often do you measure the girth of a fish that you intend
to
release ??? ;-)
As far as I'm concerned it never ever happened.
The thing is, what I'd like to see is a table where the average girth is
what is calculated with.
That way I could quickly estimate what the fish weighs. AND if it is a
big
fat old trout I can lie my ass off (within reason) and know that noone
dares
to contradict me.

Any way, the links you provided does help............now if you only
could
tell me the average girth.

/Roger



Well, geez Roger, we were just trying to help out the engineer.........
and
besides, how often do you actually care how heavy the fish you just
released
really weighed? It is much better to estimate, then you can add half a
kilo
or so :-) No? But if you want to be accurate and cover fish growing under
different conditions you would pretty much have to measure girth as well
as
length, don't you think?

Vaughan


Yeah, I know, I know.......

When are you coming by?
I'm busy tomorrow, but the rest of the week should be ok.

/Roger