Specifications and net construction of tilapia nets in Rawa Pening Lake

Abstract

Rawa Pening is one of the inland waters located in Central Java Province and is included in FMA 434. Rawa Pening is used by local communities for fishing activities using Tilapia nets. The objectives studies are to analyze the specifications and characteristics of the construction of Tilapia nets in Rawa Pening waters. In situ measurements were carried out on Tilapia nets from 29 fishermen. Technical calculations of Tilapia net size data were carried out to obtain hanging ratio, net area, net height, and shortening values. The research results show that the Tilapia net has mesh size variants of 2.5 inches, 3 inches, and 3.5 inches. The shape of the net is rectangular with a total net length of 50-100 m, the hanging ratio value is in the range 0.22-0.75, the net area is between 33.48-90.13 m2, the net height is 0.65-0.93 m and the shortening value ranges from 52.28% - 70.40%. The construction of the Tilapia net only consists of the head rope, net body, and weights. During operation, the Tilapia net utilizes water hyacinth as a float for the net and uses bamboo stakes to form the position for installing the net in the water.