1.  rock bass(n = noun.animal) centropristis philadelphica, rock sea bass - a kind of sea bass;
is a kind of sea bass
is a member of centropristis, genus centropristis

2.  rock bass(n = noun.animal) ambloplites rupestris, rock sunfish - game and food fish of upper Mississippi and Great Lakes;
is a kind of centrarchid, sunfish
is a member of ambloplites, genus ambloplites

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