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The Collaborative International Dictionary
Ceratobranchia

Ceratobranchia \Cer`a*to*bran"chi*a\, n. pl. [NL., fr. Gr. ke`ras, ke`ratos, horn + ?, n. pl., gills.] (Zo["o]l.) A group of nudibranchiate Mollusca having on the back papilliform or branched organs serving as gills.

Wikipedia
Ceratobranchia

Ceratobranchia is a genus of characins found in tropical South America.