A sportsman has:

Reverence for his quarry;
Exercises self-restraint; and
Respect for tradition.

Reverence would include not fishing at all if the run size were small and might not have enough spawners. It doesn't require, but can include conservation measures like habitat improvement or restoration or hatchery supplementation.

Self restraint requires using a sporting method that is less effective and or taking fewer fish than what the law may allow.

It's often easier to respect tradition than to follow it. For example, leader material of drawn gut or horsehair is no longer made, and rods made of bamboo are uncommon or expensive. But we can adopt, follow, and keep alive the higher values associated with the sporting tradition by passing it on to the next generation.

Sincerely,

Salmo g.