new bichir tankmate help

my stock is
all 5-9"
1x mokelembembe
1x senegal
2x albino senegal
2x ornate
2x nigerian lap
4x delhezi
2x teugelsi
1x weeksii
1x palmas palmas
1x palmas buettikoferi

1x fire eel 10"
1x marbled tire track 8"
3x liver catfish 10", 2 are 6"
2x silver arowana 7"

I have the chance to get a tiger knifefish not sure of species and/or a papyrocranus afer arowana knifefish around the size of my bichirs
should i do it?
any advice would be appreciated as I have never dealt with either of these species.
Thanks

there currently spaced out between 2 75 and one 90 but soon my custom 10' x 4' x 2' will be complete almost 600 gallons

Askaleymanfish said:

Good luck with the food bill lol all of those get either big or huge


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yeah I have nothing better to spend my money on

Vapor315 said:

First off you would have to decide between the knifes because the afer will more then likely kill the other one since they don't play too nice with other knifefish. But as far as the polypterus are concerned I wouldn't be worried a lot of people keep various knifes with polypterus including afers. I would be worried about the arowana because they look similar in shape to some knifefish. But that would be a question for the knifefish and or arowana forum.

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right on thanks for the input i'll ask in the knifefish section

rodger said:

Aro will pick up polys and take for rides. I really don't think they can hurt them.

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never had that problem before had a silver grow from 3" to 28" and he lived with 2 delhezi and 3 endlicheri