A tendon (or rope) is a branch line from a network, whether or not reinforced. A head rope can be equipped with floats to keep it on surface, an bottom rope can be weighed with weights or sinkers.

Flat network

A tidal trap you can make on the beach with a flat net, (sole net). It is a single-walled, rectangular net which is horizontally anchored on the beach.
The fourth, free side (inland) has floats and floats at high tide. Fish that at high tide come to the beach will get stuck on descending tide. With this technique you can find many flatfish under the net hidden in the sand.

kruisnet

Cross web

A ‘totebel’ or cross web or lift net is a square fishing net on two intersecting curved poles. You put it spread open on the bottom, and when peace has returned you get it back up quickly.



werpnetCasting net

A cast net (or throw net) is a net that is weighed around the edges and is thrown over fish (schools). It takes practice. With a broad sweep it,must circle open just after the throw. By reducing the surface of the flywheel ring at the bottom you can herd and retrieve the fish.

Tip: Just throw your net in shallow water were you can wade.

Landing net
I saw it, low over the ground, already catch fish. Usually no larger than 3 cm. Which are also edible.

Trawl

The net is kept open by attached brackets. Mostly of iron, for it has to be to dragged on the ground. Wooden brackets should therefore be weighed. The net is towed by a boat, a man or a horse. (A push net (for shrimps) is pushed.) Prawns and flatfish are disturbed and collected. A trawl destroys the soil and gives a lot of (unwanted) by-catch.

Gillnet

The gillnet is standing loose network of light and smooth yarn which entangles fish and shellfish with fins and spines by snagging on the gill covers.(Tangle net is floating instead of standing)
Sometimes the upper and lower line are connected to each other by ropes which are shorter than the stretched net, thereby forming a collecting bag (seine net).

Flounder knocking (Platichthys flesus) was a way to fish on the frozen former Zuiderzee (Netherlands). Equipment and catch were transported on sleds. They cut a bite of 2 by 2 meters with around smaller bites and hung with long poles (‘baggy lath', up to 17 meters) curtain-like nets in a star pattern beneath the ice. Due to a meter long oak ‘Flounder knocker’' pounding on the ice the flatfish that was resting on the bottom (Flounder) startled. The fish darted in all directions, and got trapped in the nets.

Some tribes use poison to kill or numb fish. Seems a bit risky to start with. Then you can go fishing as well with dynamite.

The fish contain so much mercury that they can measure their own temperatures. (Gene Perret)

Bycatch is the catch of species not intende by non-selective fishing techniques. It is least 40% of the catch, or 38 million tons / year. 90% of the discarded fish do not survive.
Except for fish are also caught turtles and albatrosses. Also by ghost nets (640,000 tons of gear / year, sometimes fishing even for another 600 years). http://www.bijvangst.org/en/