top pred of amazon

[jp80911]

candiru asu

 

[dirtbikerider]

I will have to say arapaima

 

[McPhishy]

Im going to cast my vote with arapaima.

I will have to say arapaima

 

[Richie_ELP]

River otter conquers all

 

[Dark Jester]

I'll say Candiru..

http://en.wikipedia.org/wiki/Candiru

Nobody wants to mess with a catfish that actually tries to swim up yer pee-hole...

 

[Experiment397]

man i hate that pix, 2 of my fav animals eating eachother. i am gonna say either piariba, rtc, or jau. maybe the piranha, rhoms or caribes are pretty kick A fish. but def not pima they are just too gentle, they are only dangerous cause of their size and jumping

 

[KJC]

I think that the peacock bass might be pre
tty high in the rankings

 

[McPhishy]

candiru asu

I'll say Candiru..

http://en.wikipedia.org/wiki/Candiru

Nobody wants to mess with a catfish that actually tries to swim up yer pee-hole...

These are more of parasites than predators. By predator, I think the OP meant fish that actually killed and eat other animals.

 

[FLESHY]

Ya, but seriously, who is going to mess with the candiru asu? Are you? No. No your not.


In reality fish wise, you basically have to look at who has the biggest mouth...and there is your winner. Peacocks and Piranhas are no where NEAR the top. It might not be the arapaima...but then maybe its the RTC?

 

[pcfriedrich]

I'm going with Bull Shark. No question.