Favorite single specimen tank species?

[WalksWIthGobies]

Besides oscars I'd have to say it was my Jade Goby.

 

[Luke tomkinson]

If I had to dedicate my 450 to a single fish I would have an aba aba knife

depening on dimensions i reckon an aba aba knife would out grow considering they have potential to growth 5 foot not saying all of them will but would say needs to be taken into account

 

[Jexnell]

Anything from the Amphilophus family
Midas
Red Devils
Trimac
Saggitae etc....

 

[Fishnerd360]

I know you can keep these fish in large community’s, but I would like a single fire eel.