Pound for Pound toughest fish?

[guppy]

How about a dwarf bumblebee goby?

 

[tigerfish]

eletric catfish would own them all

 

[tigerfish]

eletric catfish wins hands down

 

[piranha45]

NUH UH! AN ELECTRIC WHALE WOULD~~~~

 

[rumblesushi]

I'd take an average oscar to bash and electric catfish. They are like a turd with a slight electric charge.

 

[RuckusLV]

I'd hafta go with electric eel and Fahaka puffer these two are as nasty as they wanna be.

 

[bentnewt]

Piranhas Kick ass

 

[toxicfish]

I think one of the toughest fish would be a pack of about 100 RBP

 

[chrisnsimon1]

Fahaka puffer, killes enything I put with him. Needless to say he has a tank to himself.

 

[guppy]

How about the little phago maculatus, not a brawler but kills everything eventually including fish much larger than it is, as for brawlers Picture a channa vs buttikiferi match with both being the same weight.