No, I think you've taken it the wrong way!
I will try describe it for you...,..
The reason they call juvenile fish soapies, is the smell they expell when brought to the surface. Their skin becomes slimey and there is a distinct odour that smells like soap.
Try catching one and you will know what I'm talking about.
Jewfish also excrete this smell into their faeces and it will fall to the bottom of the ocean, this will attract beach worms and the fish will pounce on their presence. There's a lot to learn about jewfish! Probably why they are a prized catch!
Cheers scratchie!!!