Ctenoide or Ctenoidei: How To spell?

The word Ctenoide is misspelled against Ctenoidei, a noun meaning "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."

Word end with consecutive vowels 'EI' preceded by alphabets 'ctenoid' is misspelled as 'E' as letter 'I' is phonetically ignored
Wrong Spelling:  ctenoid-e 
Correct Spelling:  ctenoid-ei 
Find more incorrect spellings of Ctenoidei to spell right way.