“What do you call a fake koi fish?”/“A dekoi.”

A koi fish riddle is:
     
Q: What do you call a fake koi fish?
A: A dekoi.
     
“Dekoi” is pronounced like “decoy.” The joke was posted on Reddit—Jokes on August 7, 2019.
   
       
Wikipedia: Koi
Koi (鯉, English: /ˈkɔɪ/, Japanese: [koꜜi]) or more specifically jinli in Mandarin Chinese or nishikigoi (錦鯉, [ɲiɕi̥kiꜜɡoi], literally “brocaded carp”), are colored varieties of the Amur carp (Cyprinus rubrofuscus) that are kept for decorative purposes in outdoor koi ponds, water gardens or aquariums.
 
Reddit—Jokes
Posted by u/SpicyEla August 7, 2019
What do you call a fake koi fish?
A dekoi
COMMENTS
essentially_infamous
That joke went swimmingly
     
Twitter
Jokes OK Please
@jokesokplease
What do you call a fake koi fish?. A dekoi #joke
3:10 AM · Aug 7, 2019·Twee Love
         
Facebook
Poke Square
October 14, 2019 ·
Shat do you call a fake koi fish? A dekoi 😂🐟 #pokesquare #pokesquareseattle #ballardpoke #eastlakepoke #seattlepoke
 
Reddit—Jokes
Posted by u/CoolEqual March 26, 2020
What do you call a fake koi fish?
A dekoi…
COMMENTS
bourbonfeast
not the real mckoi
 
Twitter
Jack Jack
@ntiran2x
What do you call a fake Koi fish
a dekoi
1:46 AM · Mar 26, 2020·Twitter for iPhone
 
Reddit—3amjokes
Posted by u/VERBERD September 3, 2020
What do you call a fake Koi fish ?
A Dekoi.