The Little Rainbird

The Little Rainbird parodies "The Little Mermaid" and here's the cast:

Ariel-Thundra the Rain Bird (Aladdin: the TV Series)

Flounder-Perry the Platypus (Phineas and Ferb)

Sebastian-Will the Krill (w/Bill as extra; Happy Feet 2)

King Triton-Mr. Ping (Kung Fu Panda)

Sturgeon and the Ray-Phineas and Ferb

Newt on the flute-Shifu (Kung Fu Panda)

Carp on the Harp-???

Plaice on the Bass-???

Bass on the Brass-???

Chub on the Tub-???