Kawhai makes a bloody good fish for use in seafood chowder.
As long as they are bled properly when caught, I don’t have a problem with eating them.
Flounders though are a different story though, IMO, we used to go out catching them in the Milford lagoon when I was a young fella.
We’d come back with flounders and for the next week or so it would be fried flounders, baked flounders, etc.
I hate a fish where there are more bones and fins than actual meat to eat, it put me off fish for years after that escapade.