Girls too have fun catching fish - here the girl checks for possible catch. If bell-shaped basket has been pushed down into mud - now it's time to see or better feel inside the traps if the catch is successful. Entering the trap by the small opening on top, then searching the small area underwater for anything alive and moving.
This method is quiet common, easy to practice and requires nothing technical. All traps are home made of natural material and thus free of charge.