Why is it that you insist on killing others? My plant based diet is cheaper, healthier and creates less suffering. Do you think everyone could or should just kill wild animals when they don't need to? https://xkcd.com/1338/
a wild-caught fish was likely about to kill other fish, then catching a fish may be as morally necessary
The fish has no alternative and if you catch one you steal it without the need for it from other animals. Are you trying to make lions vegans? We have options, we have moral agency.
Killing animals is inevitable regardless of diet. Your plant based diet requires growing crops, but tilling soil and harvesting plants kills millions or billions of invertebrates. They are so small that they escape everyone's attention, yet they are still animals killed to make your food.
Fishing and hunting kills animals too, of course. But it does not require literally uprooting an ecosystem.
Finally, a trolley has no moral agency either. That doesn't mean nobody should interfere with it, or even destroy it if it threatens enough other lives.
Killing animals is inevitable regardless of diet. Your plant based diet requires growing crops, but tilling soil and harvesting plants kills millions or billions of invertebrates. They are so small that they escape everyone’s attention, yet they are still animals killed to make your food.
Are you a concern troll or do just don't know that we could reduce with a plant based diet the land use, the tiling of soil and the killing of those billions invertebrates? The intentional killing of 90 billion land animals and trillions of fish aside
Sure, you could reduce land use for farm raised animals.
But I'm not talking about eating those, I'm talking about eating wild caught animals. Unlike vegetables, wild caught animals require no land use at all.
So neither pure fish based nor pure plant based, but rather a combination of the two. Also one could occasionally eat other wild animals obtained via hunting, like deer.