viviparous fish

from The Collaborative International Dictionary of English v.0.48

Viviparous \Vi*vip"a*rous\, a. [L. viviparus; vivus alive +
   parere to bear, bring forth. Cf. {Viper}.] (Biol.)
   Producing young in a living state, as most mammals, or as
   those plants the offspring of which are produced alive,
   either by bulbs instead of seeds, or by the seeds themselves
   germinating on the plant, instead of falling, as they usually
   do; -- opposed to {oviparous}.
   [1913 Webster]

   {Viviparous fish}. (Zool.) See {Embiotocoid}.

   {Viviparous shell} (Zool.), any one of numerous species of
      operculated fresh-water gastropods belonging to
      {Viviparus}, {Melantho}, and allied genera. Their young,
      when born, have a well-developed spiral shell.
      [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Embiotocoid \Em`bi*ot"o*coid\, a. [NL. Embiotoca, the name of
   one genus + -oid.] (Zo["o]l.)
   Belonging to, or resembling, the {Embiotocid[ae]}. -- n. One
   of a family of fishes ({Embiotocid[ae]}) abundant on the
   coast of California, remarkable for being viviparous; -- also
   called {surf fish} and {viviparous fish}. See Illust. in
   Appendix.
   [1913 Webster]