Weight curves / charts for sharks

SSACN’s Give Fish A Chance (GFAC) initiative reflects the fact that many anglers are keen to do what they can to ensure the minimal impact to the environment and to the fish themselves.

One area where this can be really important is how to quickly weigh a fish you do not intend to retain yet minimise any damage to it through excessive handling or keeping it out of the water too long.

To help with this all you need is a tape measure and measure the fishes total length (disc width for rays and skates)

We have developed a number of alternatives which will not only enable you to ‘weigh’ a particular fish but also gain an insight as to how weight varies by species.

Although there is no doubt that fish can have different weights for the same length dependent on several factors – whether they are gravid, post spawning, sick or healthy, have good access to food-stocks etc., weight estimation based on a fish’s length offers a credible alternative – unlike the spring balances typically in use by anglers, any in-accuracies there may be will be the same for everyone.

The graphs and charts are based on 1000′s of observations made by a variety of scientific bodies over the past three decades or so, however, if anyone has any historic accurate records of weight / length for any species, especially blonde rays, they could be very useful in refining the models – just use the ‘Contact Us’ facility below.

Category: Conservation

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