For many male mudskippers, finding a mate is all about how high he can fly. Despite the muddy and not-so-romantic environment, a high jump can get him noticed in the mudskipper dating pool. Amazingly, these fish can jump up to two feet above the mud, all in the name of love. Mudskippers are also quite territorial, so spotting a duel between a couple of mudskippers is not uncommon if a neighbor gets too close. The skirmish typically includes their mouths gaping open and their dorsal fins being raised while they leap towards each other in aggression; some species of mudskipper even let out a fish equivalent to a battle cry.