biggest carnivore fish for a 55g

[unlockwall]

whats the biggest carnivore fish i can put in a 55 gallon single fish just one looking for one with big teeth and are typically known to be a aggrieve species
please dont say piranhas as the only one i want is a black and you can not keep on in a 55g

need one for one of my side tanks i have about 50+ gold fish left over from my lion fish that just passed away

 

[reticstingray]

senegal bichir
Pictus catfish

 

[fwprawn]

Exodons

 

[jechrz]

Exodons

Oh the Exodon hype!!! lol

 

[jabsthetank]

Red wolf fish


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[FuriousFish]

You said you had a lionfish which is saltwater... So do a snowflake moray eel.


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[chefwill]

The often overlooked roboides guatamalensis,...sorry if that's misspelled

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[chefwill]

Although they do better in schools

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