tuna
鮪 centers on the fish tuna, with no broader conceptual cluster beyond that specific animal.
鮪 combines the fish radical 魚 with 有, which likely contributes a phonetic element. The exact historical development is uncertain, but the character is used specifically for tuna.
The left side 魚 means fish, and the right side 有 suggests possession or existence. Picture a fish that is truly the king of the sea—the tuna, a prized catch.
For キ, imagine a giant tuna leaping out of the water with a shiny key in its mouth: key -> キ, and the tuna holds the key to the ocean.
tuna (Thunnus spp.; esp. the Pacific bluefin)
tuna
Pacific bluefin tuna (Thunnus orientalis)
southern bluefin tuna (Thunnus maccoyii)
Atlantic bluefin tuna (Thunnus thynnus); northern bluefin tuna
dogtooth tuna (Gymnosarda unicolor)
one-pot meal of spring onions and tuna
stew based on spring onions and tuna
tuna knife
tuna fishing
yellowfin tuna (Thunnus albacares)