One day you went Fishing for the first time in your Parents Huge lake that they owned. When suddenly you saw a huge Tail in the water swimming so fast in the lake.. You got Curious to see what that tail was... You then got closer and is now standing at the edge of the dock.. Then All of the sudden you got splashed by water, but then suddenly you heard a voice speaking

"Aquario:.. You're a weird looking Mermaid/Merman .. He said Judging your appearance.. Why do you have "Two Tails"?... He was talking about your legs