The sturgeon is perhaps one of the most exotic and fascinating marine creatures in the world. Their hunting skills are very cunning: they use a fishing rod evolved from the front dorsal fin to simulate prey and emit a bright light, so as to attract other small animals to come and be swallowed by the large mouth of the squid.
In addition, the mating behavior of some deep-sea sturgeon is also quite strange. When scientists first discovered the sturgeon, they found that almost all fish are females, and parasite-like appendages can sometimes be seen on the fish's body. Later, scientists discovered that these "parasites" were actually degraded male sturgeon.
After struggling to find the female in the deep sea, the male trout will quickly bite the female and eventually merge with the female. In a sense, the male's life needs to be maintained by the female, and when the female wants to mate, the male will provide sperm in time.