https://www.amazon.com.au/Big-Mouth-Billy-Bass-Compatible/dp/B07657LKNZ

Big Mouth Billy Bass is back, with all-new features when you connect him with Alexa. Everyone’s favorite animated fish still sings and dances to the original song “Fishin’ Time” right out of the box, but now you can pair him with a compatible Echo device to unlock even more features. Billy dances and wiggles to music played through Amazon Music (does not dance or move when music is played from any other music service provider). He doesn’t move his mouth during these songs, because he’s too focused on swishing his tail. Say the word “Alexa” and Billy will perk up his head waiting to hear if you’re going to start another groovy song. Billy will also move his mouth to lip-sync along with Alexa responses such as weather, random facts, and other information. When connected with Alexa, all music and sound come from the paired Echo device and do not come from the speaker on Big Mouth Billy Bass. Billy also wiggles around when an Alexa timer, alarm, reminder or notification event is triggered. Big Mouth Billy Bass automatically updates with Alexa upgrades so he always has the most current responses and capabilities.

https://maker.pro/arduino/projects/how-to-animate-billy-bass-with-bluetooth-audio-source