Here's a rough translation. The dialect is similar to my parents' native Neapolitan. I'm not too solid on the 2nd line of the last stanza, but I think the rest of it is pretty good.

The Fishmonger

Hey! We've got fresh fish this morning!
We've got gray mullet, we've got big and small eel,
squid and whiting!
Hey, pretty lady, you like fish, pretty lady, hey hey hey.

I feel happy today;
I threw my net into the sea,
I caught lots of fish,
and I feel pretty great.

Hey! I caught fish,
squid and red mullet this morning. 
I'm going to the market.
Why? To get myself married!

Ladies, run over here from the town.
My booth will help you out.
Put my fish in your skirt,
And toss it into your frying pan.