bloater

Etymology 1
, because they swell during preparation.

Noun

 * 1)  A salted, and lightly smoked herring or mackerel.
 * 2)  A freshwater fish native to the Great Lakes.

Derived terms

 * bloater paste
 * blue bloater

Etymology 2
, in the sense of the person having a "bloated" appearance.

Noun

 * 1)  a fat person
 * 2)  a greedy person