abalone, dried fish, surname
蚫 centers on the abalone, a type of sea snail valued as food. The dried fish and surname meanings are specific applications: dried abalone as a preserved food, and a family name likely derived from the creature or its association.
蚫 combines 虫 (insect/creature) with 包, which likely contributes the sound ホウ. The character was created to represent the abalone, a shellfish, using the creature radical and a phonetic component.
The left side 虫 suggests a small creature, and the right side 包 looks like a wrapped package. Imagine an abalone as a sea creature wrapped in its own shell, like a natural package.
For ホウ, picture a whole abalone being served: whole -> ホウ, and the abalone is the whole package.