An implement used to trap fish, especially eel, in the rice fields. Made from rattan and bamboo laths. The sharp bamboo prings are pointed inward (so as not to allow fish to move out). The funnel-like fish trap part is woven with the stem of the bi-al plant, a vine that grows in the steep, brush-covered slopes surrounding the rice terraces. This fish trap is placed in the mud of the rice terraces. The trap is designed so that the fish pass through the funnel-shaped mouth of the trap and cannot get out again. Gubu are normally used from the time just after harvest until the next cropping season.