Monster Inn Rectification Report - Chapter 2
In fact, the male hippocampus is not pregnant in the traditional sense. After entering the breeding period, the female hippocampus lays eggs into the nursery bag. In this way, the fertilized egg is formed, develops in the pouch, and finally crawls out by itself. The male hippocampus only acts as an eggplant, which means that the male hippocampus is responsible for childcare, not production (the above popular science comes from the Internet)
This article is not true, just choose some animal characteristics to make a story.