[Possible NSFW] I believe my fish is dying from fin and tail

Help what’s wrong with my fish

Does anyone know what is wrong with this goldfish?

Anyone know what is wrong with my fish?

What is wrong with this fish?

HELP, something is wrong with my fish.

spots on fish’s tail

My comet fish has been sleeping with its head down and tail up

Fish can’t swim properly and it looks like it’s constantly

What’s wrong with my goldfish’s tail fin?

What’s wrong with my buddy’s tail fin?

What is this on my fish’s tail fin??