Least aggressive monster fish?

[groovylime]

Flagtail Prochilodus.... the monster vegetarian.
I keep my 17 incher with many community fish including <2 inch tetras without any problem.

 

[fishfreak2009]

Well, I've seen some pretty large plecos in with some very small fish (including guppy fry).

 

[peewee]

giraffe cats

 

[GoingCichla]

king kong parrot

 

[love The Jack Dempseys]

Realy guys??? Im shocked nobody said oscars yet!!

 

[Allan01230]

Geophagus Jurarapi can get to 12 inches plus. And are gentle giants. I use to keep my trio with neons without any promblems. Choclate cichlids are pretty docile for their size also.

 

[Paulbearer]

Chocolate Cichlid
Severum
Tinfoill Barb

 

[spin420]

Hi-fin Banded Shark

 

[JML1997]

I've seen 2'+ Channa Barca with tiny tetras.

 

[321jacobm]

my ornate bichir wouldnt harm a fly and hes almost 20 inchs