A man here was arrested after trying to con a fish merchant with a bogus check, said First Lt. Nawaf Al-Bouq, spokesman for the Jeddah Police. The swindler bought a shipment of fish from the merchant with a SR500,000 check. The merchant phoned the bank and found the man had no money in his account. At this point the merchant called the police who advised him to set a trap for the criminal. When the conman came to collect his fish, plain clothes police officers promptly arrested him. __