Best way to cull them is into grease, after cleaning.
Or now my wife likes her new air fryer that uses minimal grease.
I know, I know, your family does not like fish that well.
Cut them into thin strips like fish sticks or small bite size chunks, coat with a good fish coating mix with the flavors you like, and even non-fish eaters will think they are pretty tasty.
I'm not a big fish eater myself. But pond raised and artificial feed fed and the right flavored coating and we now eat quite a bit of fish and like it a lot.
