It's a well known fact that female praying mantis and several spider species gobble up their male partners after copulation! However, scientists have now discovered a species of Japanese transgender fish that fight underwater fishy wars because they are jealous of both female and male competitors!
Due to the fact that the Asian Sheepshead Wrasse (not sheepshagger) enjoys a bit of both, rear and front, they will literally fight anything that comes in the vicinity, male or female because this species of fish is constantly changing its gender and who knows what end they prefer at one given moment!
So, it becomes an all-out war of supremacy if a potential male or female partner arrives and, a competitor is feeling horny, male or female. They will fight each other to the death for a bit of front or rear!
As mentioned, some female spiders and the praying mantis have it easier, they just need a male for a quickie and then gobble it up. The Asian Sheepshead Wrasse has a slightly more complicated sex life because it might change its fancy from one second to another and a potential partner could also change sex and become an enemy instead of a piece of "fishy fluff" whilst hunting for a quickie too!
Nature never intended its creations to be perfect, in fact, its creations were obviously created to keep the world turning and win the "survival of the fittest race!" The Asian Sheepshead Wrass is a perfect example of that because it can shag anything without being called gay, lesbian, a tranny or perverse, and will always have multiple options in the fishy ratrace.
Darwin was right BTW and god fearing Christian monogamists completely wrong (it seems!), and proof is this fishy, Japanese gender bender!