Bilfish or Billfish: How To spell?
The word Bilfish is misspelled against Billfish, a noun meaning "A name applied to several distinct fishes"
Billfish has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings bi & fish which should not be misspelled with single 'L'
Wrong Spelling:  bi-l-fish  Correct Spelling:  bi-ll-fish 
Find more wrongly spelled words of Billfish to spell it well.