fingerling
/ˈfɪŋɡəlɪŋ/
noun
1 A salmon parr.
2 US A variety of potato having a pink, yellow, blue, or light tan skin and flesh.
Origin
Middle English (in the sense ‘finger of a glove’): from finger + -ling.
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There's a palindrome-like life cycle for salmon: egg, fry, parr (fingerling), a trip to the ocean and back to a particular stream, where it's caught and fried for breakfast with some eggs. For the complete cycle, the fish bust barely avoid being eaten by a bear.