Bubus are cylindrical fish traps made by villagers at Danau Sentarum (see Danau Sentarum and Cordage) in West Kalimantan. The traps are made out of rattan, and each one requires about 500 canes. The preferred rattan to use for bubus is Calamus schistoacanthus, or "duri antu", one of only three rattan species found in local flooded forests. The stem fiber of C. schistoacanthus is extremely tolerant of daily submersion in the lake, and a well-made bubu can last four to five years. A dedicated fisherman may have dozens of these traps. [NOTE: More about the use of rattan at Danau Sentarum can be found here].