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The Catch & Release (from the English catch and release) is a fishing philosophy for which you do not kill the fish caught, whatever the fishing technique used, but it raises itself in the water. There is no definite information on the origin of this behavior, but we can give for sure that it has begun in the United States in the environments of the fishing with the fly and of the fishing to spinning to the black bass or perch trout. These two techniques of fishing, the fly fishing and the spinning, are all 'now the fishing disciplines that support more and practice Catch & Release. Scientific studies of various faculties of international ichthyology and the marking of captured fish, have demonstrated without a shadow of a doubt that the freed fish not only survive for a long time, but can be recaptured . The environmental impact of the fishermen who practice this technique is almost nil since the fish population of a given area is not affected by an indiscriminate withdrawal.
Releasing the fish caught, for those who share, implement and spread the practice of catch and release, is not only a sign of civilization and respect for the environment, but represents a true philosophy and approach to fishing, where the joy of capture is added to the happiness of seeing the newly captured animal free again.
Catch & Release base points
The Catch & Release technique, which allows the captured fish to be released with little damage to them and
allowing its subsequent survival, it consists of some basic rules:
1.Using single and barbless hooks
multiple hooks (treble hooks) and hooks with barbs cause serious injuries to the fish that endanger their survival. Using hooks that are single and without barb, we will be able to unhook the fish more easily and without causing damage to it. Normally the barbless hook does not significantly increase the percentage of unhooked fish during fish recovery.
2. Retrieve and unhook the fish quickly
during recovery the fish struggles to free itself. This unequal struggle causes severe stress with the release of an excessive level of lactic acid. A symptom of this excessive stress caused by slow recovery is the position that the fish takes after being released: it stays still for a long time and, in the most serious cases, it abandons itself in a horizontal position to the current. Equally important is the fast unhooking favored by the absence of the barb on the hook. The fish can survive out of the water for only a few minutes and it is advisable to reduce this time to a few seconds.
3. Keep the fish in the water
if in recovery we bring the fish up above the shore, especially if sandy or stony, this will cause other wounds caused by impact or rubbing on a rough surface. We recall that the skin of the fish is covered with a protective mucus and that the loss of this mucus caused by rubbing on the ground can lead to parasite infections. The fish must therefore be released while it is still in the water.
4. Handle the fish gently with wet hands
essential not to touch the fish with dry hands: it suffers a thermal shock due to the different temperature of our body (36 °) compared to that of its body which coincides with that of the water in which it lives. Wet the hands reduces the thermal shock enough and also avoids the removal of superficial mucus. The delicacy and care in handling it is equally important: we must avoid stressing the gills particularly and tightening it with force. The net, if it has a net without knots, can be of help as long as you are careful not to catch the mesh of the net with the gills.
5. The unhooking
in addition to doing this delicately and quickly, keeping the fish in the water, it is advisable to use tongs (such as hemostatic forceps). Deeply hooked fish (that is, the fish to which I love clung to the esophagus and not to the mouth) must not be unhooked. In this case disgorging causes very serious wounds in vital parts: it is better to cut the line. As a valid alternative to cutting the line, there has been a disgorger (Larchy) able to locate the hook, free it from October 2006 the barb and invert its position even in the deepest part of the esophagus and extract it without the danger of re-hanging on the path to the outside, so that the aforementioned wounds are reduced to a minimum. Since everything takes place automatically, the operation is carried out quickly, safely, while the fish remains in the water and without the need to grasp it.
if the fish is exhausted it should not be let go immediately: it must be kept in the water by holding it with your hands and against the current. By moving it a little forward and back, water and then oxygen are introduced into its gills and released only when it starts to move by itself, trying to free itself.