fish-faced

[Over the top]

"Do you truly think Jeanine is fish-faced?
"Absolutely. And believe me, I've had enough experience with ladies to know fish-faced when I see it"

What does fish-faced mean?
Why he said "to know fish-faced when I see it" instead of to know a fish faced.....?
Thanks a lot.

[Rover_KE]

Here's a picture of a girl who might be unkindly described as fish-faced:

Google

He's saying he has seen a lot of women with a face like that.

Rover

[Over the top]

Thanks Rover.
I was asking shouldn't there an 'a' before fish faced because it's not defined.
He said "to know fish faced when I see it"

[Rover_KE]

It's becoming more and more common for people to use adjectives as nouns in informal, casual conversation like this.

'This climb will be very scary.'
'No problem - I can do scary.'

'Some of these people are stupid.'
'I can cope with stupid.'

'This salesman can be very pushy.'
'Don't worry; I know pushy when I see it.'

Rover