What is the most intelligent freshwater fish?

[Killerhap]

Then again....

http://nootropics.com/intelligence/fishbrain.html

 

[AquataHolic420]

IMO, the most intelligent FW fish is the one that has succeeded in never alerting humans of its existence.

Let's see ya out-karma that one.

Too Tru! stupid humans ruined everything! poor dodo birds,

 

[missyme06]

fresh water dolphin

 

[deangelo]

my experience..Knifefish and my bleekeri

 

[adamstv]

is that a grass carp? hahah i wantone in my tank!

its a steelhead...... at least that or a huge rainbow trout

 

[L.BelcherII]

My Oscars are pretty damn smart, and they seem to have their own personalities too. wheteher they're the smartest...

 

[graham]

The smartest fish I have ever owned were oscars. Maybe it was just personality but they seemed damn intelligent, but mean.