codfish
鰵 centers on a specific fish: the codfish. The meaning is narrow and concrete, referring to this particular type of fish.
鰵 is a phono-semantic compound: 魚 (fish) provides the meaning, and 敏 likely contributes the sound ビン. The character was created specifically to name the codfish.
The bottom is 魚 (fish), and the top 敏 suggests quickness. Picture a quick, agile codfish darting through the water.
For ビン, imagine a codfish being tossed into a bin on a fishing boat: bin -> ビン, and the fish lands with a thud.