The Collaborative International Dictionary of English v.0.48:

Black bass \Black" bass`\ (Zool.)
   1. An edible, fresh-water fish of the United States, of the
      genus Micropterus. The small-mouthed kind is
      Micropterus dolomie[imac]; the large-mouthed is
      Micropterus salmoides.
      [1913 Webster]

   2. The sea bass. See Blackfish, 3.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Chub \Chub\, n. [This word seems to signify a large or thick
   fish. Cf. Sw. kubb a short and thick piece of wood, and perh.
   F. chabot chub.] (Zool.)
   A species to fresh-water fish of the Cyprinid[ae] or Carp
   family. The common European species is Leuciscus cephalus;
   the cheven. In America the name is applied to various fishes
   of the same family, of the genera Semotilus, Squalius,
   Ceratichthys, etc., and locally to several very different
   fishes, as the tautog, black bass, etc.
   [1913 Webster]

   Chub mackerel (Zool.), a species of mackerel (Scomber
      colias) in some years found in abundance on the Atlantic
      coast, but absent in others; -- called also bull
      mackerel, thimble-eye, and big-eye mackerel.

   Chub sucker (Zool.), a fresh-water fish of the United
      States (Erimyzon sucetta); -- called also creekfish.
      [1913 Webster]

WordNet (r) 3.0 (2006):

black bass
    n 1: bluish black-striped sea bass of the Atlantic coast of the
         United States [syn: black sea bass, black bass,
         Centropistes striata]
    2: widely distributed and highly prized American freshwater game
       fishes (sunfish family)