As we all know, the reproduction methods of animals in nature can be basically divided into two types: sexual reproduction and asexual reproduction.
Creatures that reproduce with sexual reproduction are mostly clearly distinguished between male and female, and only by working together can we complete the task of reproducing offspring and make the race continue!
The world is so big, there are always some guys who are mavericks and outside the rules. You may know that some sexually reproducing animals are hermaphrodites, and this is not a minority in nature. But have you ever seen a female being able to turn into a male animal?
Illustration: Males
The animal introduced today has this ability, which is incredible for us, for them, it is a daily operation, it is the golden convex head fish!
The golden convex frontal carp belongs biologically to the suborder Bulbophyllaceae of the order Perciformes and is a very peculiar-looking marine fish. At present, they are mainly distributed in the western Pacific Region, and they exist in the southern part of the Japanese sea, the Korean sea and the south China sea.
Their names are derived entirely from their looks, but are based on the males' looks. The male tuna has a large bump on its head and a long, thick snout. Compared with the male, you will not think of this name at all in the female, it is similar to an ordinary marine fish, there is no brilliance!
Figure Note: ♀ and ♂ a comparison chart
The golden convex head can grow up to about 1 meter and weigh up to 15 kilograms, which is said to be a male fish, and the female fish is relatively small.
In the land of the golden convex headfish, polygamy is practised. Generally speaking, in an area, there is only one male fish, followed by more than 10 females, and the mating rights of these females are in the hands of the males.
Illustration: Female
This social model is very similar to that of African lions, all of which are headed by male males, except that the bulbopods are more authoritarian, basically only one male in a group!
If this is the case alone, the longhead fish is not worthy of special description, the biggest feature of the longhead fish is transgender, basically all male fish have been female fish. I'll introduce you to what's going on!
Unlike the African male lion, the male bulge fish will also prevent foreign invasion, but the most dangerous thing for it is the female fish in the group who is about ten years old. Females at this age undergo incredible changes when their bodies reach a certain size.
First of all, the female fish becomes more cold, and will deliberately avoid the pleasure of the male fish, and secondly, under the action of a special enzyme in the body, its female hormones will stop secreting, and the male hormones will come out and begin to circulate continuously in the body.
Gradually, its head will bulge and its chin will lengthen, a process that will last for many months, and when it appears in the group in a bright and upright manner, it proves that it has "evolved" and it has become the appearance of its husband! Imagine how big your psychological shadow area is when your wife, who you spend all day and night, suddenly becomes a man?
When the female is fully transformed into a "male body", the first thing she does is challenge her husband. Generally speaking, they can compete for success, and the old male fish finally failed to defeat his wife's sniping and had to leave the scene. The newly ascended chief gladly took over, and his former sisters eventually became his wives and concubines, and then had to watch out day and night for the transformation of other females!
Wouldn't it be nice to be a female? Why does this phenomenon of "offensive and defensive transfer" occur?
Scientists have found that this model is more likely to play its own role and the role of the group! Creatures with "polygamy" systems are relatively competitive. In terms of mates, it can be said that drought and flood are uneven, and weak males are unable to retain females for mating.
Therefore, when the convex head fish is small, as a female fish, as a vassal of the male fish, so that it can also pass on its genes through mating. When it grows up, becomes a male, has territory, and can pass on its genes in a dignified name!
Therefore, being a female as a child and a male when she grows up is the best breeding strategy for the convex headfish.
Both to be a mother and a father, the life of the bulge head fish can be described as very exciting. The world is so big that there are many strange animals in addition to the golden convex head fish. But no matter how it changes, it is for the transmission of its own genes, for the continuation of the race, and for the better survival in nature!
END/(Image from the Internet, invasion and deletion)