It was a day in 2006, off the east coast of the Atlantic, off the coast of Liberia. The production of that voyage was not very good, the whole fleet was silent, and the atmosphere was somewhat solemn. Suddenly, a smile leaked from the captain's face and he said, "I pulled a strange fish on this voyage, and in the cabin, I'll take a look at it." I was also very surprised when I saw this fish, although I came from a cobain, there was still no clue in my mind.
However, judging from the gill hole and skin, I can conclude that it belongs to a shark species. Later, by chance, I read something about the "alien shark". I'm more certain that the fish belongs to the genus Heteroscale sharks of the family Horned Shark family, but that's about it, not specific to the species. Similar images cannot be found online.
At that time, I also tried my best to find formalin, but after all, it was an African country, and it was impossible to preserve the specimen. This is perhaps the only chance in life.
Heteroqualis is a deep-sea shark that inhabits the upper reaches of continental slopes or seamounts, reaching depths of 550 to 2000 m, oviparous, with 8 litters per litter. Maximum total length 84 cm.