http://forum.aqua-fish.net/ A forum devoted to aquarium fish, plants, techniques and fish keeping as a whole. en http://forum.aqua-fish.net/?topic=sword-fish-sexes-#1 We got some sword fish. We thought we knew how to tell the difference in male and Female. We brought two male long tail and three female no tail. Now all of them have long tails where did we go wrong? Wayne 2009-05-22 http://forum.aqua-fish.net/?topic=sword-fish-sexes-#2 maybe they were immature males. try talking to the fish seller about an exchange? weirdartist 2009-05-25