ID on yellow nudibranch or sea slug

[Beck]

Trying to figure out what type of nudibranch this guys is. It's about a inch long. Good or bad?

 

[TurboTang]

Thread 'Yellow Nudibranch hitchhiker' https://www.reef2reef.com/threads/yellow-nudibranch-hitchhiker.206924/

 

[minus9]

Here’s a great resource

 

[Beck]

Here’s a great resource

Thanks for the link. I'm pretty sure it's in the Elysiidae family, but there so many that look so similar.