Decapod anatomy are referred to as the "gonopods". At the end of the pleon is the tail fan, comprising a pair of biramous uropods and the telson, which bears the anus. Together, they are used for steering while swimming, and in the caridoid escape reaction. In crabs and some other carcinised decapods, the abdomen is folded under the cephalothorax. Decapod anatomy The decapod crustacean, such as a crab, lobster, shrimp or prawn, is made up of 20 body segments grouped into two main body parts, the cephalothorax and the pleon (abdomen). Each segment may possess one pair of appendages, although in various
Spider fighting tournament, with the last two victorious spiders fighting each other in the finale. Spiders used in spider derbies in Singapore come from the species "Thiania bhamoensis" (also called "Fighting Spider"), a jumping spider. The practice has been the subject of a memoir entitled "Spider Boys," and a popular television series in Singapore called "Fighting Spiders." Capturing, admiring, nurturing, and staging fights among these spiders is a popular activity among many young people. The practice had a relatively large financial impact on those young people who participate in these practices both because of the sale value of a strong contender and