The Collaborative International Dictionary of English v.0.48:

Ctenoidei \Cte*noid"e*i\ (-?-?), n. pl. [NL., fr. Gr. ???, ????,
   comb + -oid.] (Zool.)
   A group of fishes, established by Agassiz, characterized by
   having scales with a pectinated margin, as in the perch. The
   group is now generally regarded as artificial.
   [1913 Webster]