List some fish that are happy living solo

[LeahK]

Community tanks are certainly nice for many reasons, but there's also a lot to be said for the convenience of having only one fish in a tank (less worries over QT, for one).
Help me make a list of fish that would be perfectly happy in a specimen-only tank. Here's some I've come up with so far:

bettas (obvious choice)
African butterfly fish (Pantodon buchholzi)

 

[krytan]

Oscars
Bettas

 

[thebrandon]

african butterfly

 

[Dopehand]

Ropefish (AKA Reedfish AKA Snakefish)

 

[Hebily]

Puffer (any)

 

[thebrandon]

Ropefish (AKA Reedfish AKA Snakefish)

I've found them to be much happier and active when kept in groups, but seem to do just fine when kept by them selves

 

[Vicious_Fish]

Most large cichilds are fine being kept solo.

 

[crimsonmoon]

neon tetra
haha jk

idk if arrowanas are solitary but i usually only see one to a tank when fully grown. maybe just due to their size idk. just taking a stab in the dark

 

[msjinkzd]

what size tank?

 

[Fish-Addict]

Dwarf Gouramis