good idea for tankmates.

[benzjamin13]

If you want a bit more aggression, you could try Blue Gouramis.

 

[MonsterMinis]

keep an eye on the bellycrawler.. pikes are pikes.. are pikes...

 

[Polyptasaurus]

wow this is bizarre, i have a royal knife with a pike and a royal pleco. also have a big green sev and a fire eel in there too. eels and bichir make great tank mates and add to the "wow effect" of the tank because knifes are already a fascinating fish to own.