If the fish cant spawn, they have to reabsorb the eggs into themselves. Its not a pleasant process in fish, and does result in mortality. That's what im guessing happened. When one of my favorite lakes used to have diploid fish, and caught a big female, that was spawn restricted. She shot eggs all over my pontoon boat. As much as it was gross. the fish was probably pretty agitated, but im betting the release of eggs was probably better off for her in the end.
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