Black Ghost Knife

[Guitar17]

Can i Keep a Black Ghost Knife in a 55 with 2 Angles and a redtail black shark and i bosmeans rainbow

 

[Kajuki18]

No it can't turn around when it gets older

 

[andywg]

Basically, the above is correct. The fish can get to 20" so for full adult size you'll need a tank that is around 24" front to back. The very minimum would be a longer thinner tank (at elast 72" x 18" giving around 100 gallons (US)).

 

[Guitar17]

i really want a knife fish what about an african brown knife

 

[isu_guy]

Overall I'd agree with the above, except the turn around part. These fish are very flexible and can turn around in some tight spots. Mine does uturns his caves that are not as wide as he is long.
Also, during feeding time mine will scan the surface for food then do a backflip style move to zip to the bottom to scan the floor for any scraps, so mine could really turn around in a tank that was just a few inches front to back. >>>>BUT<<<< just because he would be able to turn around doesn't justify putting him in one. Its not good practice to buy a fish if you don't already own a tank that could hold him full grown, but a 55 would suffice for a decent while, but then you should upgrade.