Most Challenging Creature to keep in the Hobby?

What is the most challenging creature to keep in the hobby? It can be personal most challenging or just general consensus on what’s hard to keep.
Not personal experience, but moorish Idols I’ve heard because they only eat sponges. As well as sea cucumbers but I’m not too sure as to why?
 
Just saw some feather starfish yesterday. They are almost impossible
IMG_7511.jpeg
 
What is the most challenging creature to keep in the hobby? It can be personal most challenging or just general consensus on what’s hard to keep.
It’s hard to narrow it down to just one challenging to keep species but here’s mine;
Chelmon rostratum - the CBB
image.jpg

IMG_8672.jpeg


This is in no way personal experience - those who know me and this fish will know this guy is currently 4 years old and still thriving. However altogether, people seem to attempt QT with this fish and it rarely succeeds. These guys just shouldn’t be kept by people who want to QT everything and anything that goes into their tank. They also have difficulties with feeding so for best survival I find they are best put into an established tank instead of a sterilised tank straight away.
 

TOP 10 Trending Threads

WHAT DO YOU ALWAYS RUN OUT OF AT THE WORST TIME?

  • Salt mix

    Votes: 15 18.1%
  • Fish or coral food

    Votes: 5 6.0%
  • Test kits or reagents

    Votes: 8 9.6%
  • Filter media or replacement fleece

    Votes: 4 4.8%
  • RO/DI filters or supplies

    Votes: 13 15.7%
  • Fragging and repair supplies, like glue or epoxy

    Votes: 10 12.0%
  • I keep a backup of everything

    Votes: 21 25.3%
  • Other (Post in the comments)

    Votes: 7 8.4%
Back
Top
Home
Post thread…
Market
What's new