Black Ghost Knifefish

[ScoutCarcer]

Can a Black Ghost Knifefishlive in a 55 gallon? If so what fish can live in a 55 gallon with it?

 

[pica_nuttalli]

Max. Size In Aquarium: Up to 1' 6"

so, no. not in a standard dimension 55g. however, one can be kept in a 75g since the standard 75g is 2 feet wide.