Another plot device could be the search for a lost or stolen fin - related item. Maybe it's a magical scale from their fin that has special powers. This would send the character on a quest, encountering various allies and enemies along the way.
In fantasy fiction, characters with unique traits like fins can be forgiven or accepted through the power of empathy. Other characters might learn about their different cultures or the reasons behind their physical features. For example, if a mermaid with fins enters a human - dominated world, she could show her kind heart and good intentions, which would make the humans more likely to accept her.
Well, it's hard to say for sure. 'Boogie' could be based on a true story with some modifications or it could be completely fictional. It really varies depending on the creators' intentions.
In Monster Hunter Stories, the cephalos usually has a certain number of fins. This could be around two or three, but it might change based on different game settings or updates.
The Boogie doll was a canine, one of the smallest toy dogs among the small breeds. They were petite, with apple-shaped heads, large and thin ears, and upright ears. Boogie dolls had long hair and short hair, with short hair being the majority. Their fur colors were red, brown, brown, and many other colors. Their lifespan was 12-15 years. Boogie dolls are widely distributed around the world, suitable for living in urban apartments, and used as toy dogs, family dogs, and companion dogs.