Hmmm. I'm pretty fickle, so what is my favorite or Holy Grail fish changes frequently.
Here are some fish that I would consider Holy Grail fish for me and whether I have kept them personally:
Attenuatus wrasse- yes
Halichoeres rubricephalus- yes
Pintail/lunatus hybrid- yes
Halichoeres chlorocephalus- no
Cirrhilabrus sanguinensis- no
Cook Island Helfrich firefish- no
Liopropoma carmabyi- no
Liopropoma fasciatum- no
Here are some fish that I would consider Holy Grail fish for me and whether I have kept them personally:
Attenuatus wrasse- yes
Halichoeres rubricephalus- yes
Pintail/lunatus hybrid- yes
Halichoeres chlorocephalus- no
Cirrhilabrus sanguinensis- no
Cook Island Helfrich firefish- no
Liopropoma carmabyi- no
Liopropoma fasciatum- no