[hippocampus]
The seahorse is named for its head, which looks like a horse's head, but interestingly, it is a strange and precious small fish in the near land and shallow sea. It belongs to the sea dragon family. The seahorse is flat on the side of the head. There are two nostrils on each side of the head, the head is at right angles to the trunk, the chest and abdomen are protruding, and it is composed of 10 ~ 12 bone rings. Generally, the body is about 10cm long, the tail is slender, quadrangular, often curly, the whole body is completely wrapped by membrane bone pieces, and there is a spineless dorsal fin, No ventral and caudal fins.
[is the hippocampus born male or female?]
The male and female identification of hippocampus is very simple, that is, the male fish has abdominal sac (commonly known as parenting bag), while the female fish has no abdominal sac. The hippocampus is not hermaphroditic. The hippocampus is just a male hatching. The breeding period of hippocampus is from May to August every year. During this period, the mother of hippocampus lays her eggs in the parenting bag on the abdomen of father hippocampus. After 50-60 days, the young fish will be born from the parenting bag of father hippocampus. Therefore, it is said that father hippocampus is responsible for parenting, not really the father. Father's parenting bag only acts as an incubator, and the eggs still come from the mother.
[what are the same examples?]
Living in the sea, in addition to seahorses, sea dragons are also a special case. The task of producing offspring is completed by males. The male sea dragon is nicknamed "big daddy". It looks almost the same as the female, but it is indeed a male and worthy of its nickname. Sea dragons living in the sea will produce offspring only when the surrounding environment meets the natural habitat conditions. Moreover, the mating behavior of sea dragons is very secret, and few people have witnessed the mating process of male and female seaweed dragons. The female sea dragon lays her eggs into the brood bag under the male sea dragon's abdomen, and the male sea dragon completes the hatching process. After the fertilized egg is hatched for 4 to 6 weeks, the baby sea dragon will be born from his father's body.
The above is the unique way of reproduction of organisms. Many fish are bred by males. In fact, they are hatching, not fertility. Some animals share the task of hatching, such as penguins!