can you cull dead fish in Texas? Is there a law?

No, and yes its waste of game.

This^^^^

explain....

explain what? You caught and killed a fish....you have to harvest it and not toss it back. It's a Texas law.

It's the same as killing a deer and leaving it there to rot. If you kill it, it has to go home with you.

sorry I read it wrong.. I thought it said it's a waste of time.. I am blond.

How does the "waste of game" law apply to slot fish that were deep hooked and belly up when released?

I don't know. Good question.

Waste of Game

It is an offense (Class C misdemeanor) if a person while hunting kills or wounds a game bird or game animal and intentionally or knowingly fails to make a reasonable effort to retrieve the animal or bird and include it in the person's daily or seasonal bag limit. It is an offense if a person intentionally takes or possesses a game bird, game animal, or fish and intentionally, knowingly, or recklessly, or with criminal negligence, fails to keep the edible portions of the bird, animal, or fish in an edible condition. It is a Class A misdemeanor to fail to retrieve or to keep in an edible condition a whitetail or mule deer, pronghorn antelope, or desert bighorn sheep hunted without landowner consent; from a vehicle, boat, or aircraft (including unmanned aerial vehicles); on a public road; at night; or with the aid of a light.

You let the birds and turtles have it. When that happens cut the line or go thru the gills and turn the hook over.

I asked a game warden that question before. If it is not a legal length fish you have to throw it back.
Crazy I know, but if you deep hook a fish that you know is going to die but put it back at once it is still alive so you are not breaking a law.