Okay so in my description, i have a luca x luna child named Cadenza so...here's her design

cadenza is light green with a light lime muzzle going to her tail, yellow ear fins, light blue hair, a cornflower blue dorsal fin, dark blue fin going to her tail tip and a pink tail fin, brown eyes, a seaweed necklace with a pink pearl and a green dress

she's friendly, helpful but is very shy, and at times very stubborn

her full name is Cadenza Gabriela Paguro and her nickname is Cadence

and she's voiced by Auli'i Cravalho

oh and i kinda forgot to mention who voices rosetta...

Rosetta is voiced by Camila Cabello