Abstract: A conventional crab trap having improved means for preventing crabs from escaping from the trap and for adapting the trap to catch differing species of crab. Crabs enter the trap by crawling through a tunnel formed by four net panels terminating in a rectangular opening normally inaccessible to the crabs inside the trap. In practice, many of the crabs are able to reach the opening by crawling along the net panels. In order to prevent crabs from escaping in this manner, a triangularly shaped baffle is placed between the opening and one of the panels. The size of the opening may be varied as required by law when fishing for different species of crab by pivoting an edge mounted panel across part of the opening. The crab trap also includes several net panels supported by rectangular frames which are releasably secured to each other and to the trap in order to cover the escapement end of the trap.