Prompt
"Generate an image of a large, silver fish with black spots, swimming in a coastal river, with a backdrop of estuaries and mountains. The fish has a distinctive pinkish-red coloration on its back and fins, characteristic of its spawning phase. Include some aquatic plants and rocks in the riverbed. The style should be realistic and detailed, highlighting the fish's sleek body and vibrant colors. The image should represent an Oncorhynchus tshawytscha, also known as a Chinook salmon or king salmon, in its natural habitat."