“Keep your friends close, but your enemies closer” is a famous saying from the film The Godfather Part II (1974). “Keep your fronds close, and your anemones closer” and “Keep your ferns close, and your anemones closer” are popular puns.
   
“As any seawater aquariist will tell you:  keep your fronds close, and your anemones closer” was posted on Twitter by Joel Rosenberg on April 7, 2009. “You know what they say, though ‘Keep your fronds close and your anemones closer’” was posted on Twitter by LivingDedGrrl on December 28, 2010. “‘Keep your fronds close, but your anemones closer’ - ocean floor wisdom” was posted on Twitter by The Kid on January 4, 2011.
   
“Keep your ferns close and your anemones closer” was posted on Twitter by Quinn Sutherland on January 4, 2012. “Our motto at the flower shop is ‘Keep your Ferns close and your Anemones closer’” was posted on Twitter by Major McNipples on June 27, 2013.
   
 
Wiktionary: keep your friends close, and your enemies closer
Proverb
keep your friends close, and your enemies closer
1. One should be on one’s toes and alert of one’s surroundings if malicious people are around, to ensure that they cannot wreak havoc in one’s life.
     
Twitter
Joel Rosenberg
@joelrosenberg
As any seawater aquariist will tell you:  keep your fronds close, and your anemones closer.
9:08 AM · Apr 7, 2009·Twitter Web Client
   
Twitter
LivingDedGrrl
@H0TMessBarbie
Replying to @GeneralGrevious
@GeneralGrevious You know what they say, though “Keep your fronds close and your anemones closer.”
6:43 AM · Dec 28, 2010·Twitter Web Client
   
Twitter
The Kid
@KidThumbs
“Keep your fronds close, but your anemones closer” - ocean floor wisdom
10:57 AM · Jan 4, 2011·tGadget
 
Twitter
Quinn Sutherland
@ReelQuinn
Keep your ferns close and your anemones closer.
1:06 AM · Jan 4, 2012·Mobile Web
     
Twitter
James Hazelden
@jameshazelden
The Law of the Sea: keep your fronds close, but your anemones closer.
10:38 PM · Sep 18, 2012·Twitter Web Client
 
Twitter
Major McNipples
@mikeym00n
Our motto at the flower shop is “Keep your Ferns close and your Anemones closer.”
2:53 AM · Jun 27, 2013·Twitter for Android
 
Twitter
Savannah Pittmanа
@_savannahpi
Our motto at the flower shop is “Keep your Ferns close and your Anemones closer.”.
6:25 AM · Jun 28, 2013·Mobile Web (M2)
       
Twitter
Luke M
@I_am_Lukem
Horticulturalists keep their fronds close and their anemones closer.
2:27 PM · Jul 10, 2013·Twitter for Android
     
Twitter
Sanjeev Kohli
@govindajeggy
Al Pacino’s garden feng shui advice:
“Keep your fronds close, but your anemones closer”
5:19 AM · Aug 14, 2013·Tweetlogix
 
Twitter
Cairns Marine
@CairnsMarine
Who can forget that wise, old Clownfish advice?
“Keep your fronds close, but your anemones closer!” http://fb.me/19AoQIogZ
4:30 AM · May 9, 2014·Facebook
 
Twitter
Boothby Graffoe
@boobygraffoe
My aquarium has the kelp in the middle but the coelenterates at the front because you should keep your fronds close but your anemones closer
3:40 PM · Mar 7, 2017·Twitter Web Client
   
Facebook
I Love Nemo
April 13, 2020 ·
Keep your fronds close and your anemones closer.
 
Twitter
joey
@coketown_
Keep your ferns close and your anemones closer
(Just wanted to show off my anemone. It finally bloomed)
5:27 PM · Aug 16, 2020·Twitter for iPhone
 
Reddit—Oneliners
Posted by u/TugBoatAugust September 20, 2020
Clownfish keep their friends close, but their anemones closer.