600 litre aquarium

[Vellu]

Hello from Finland.
(I try to write understandable english...)
(And sorry about my european units)
(And sorry, if this thread is in wrong place...)

So, I have a small tank compared to you, but I want still at least 'medium' "monsterfishes". The aquarium is so ~600 litre, 170 centimetre long, 60 deep, and 60 high.
We don't have very specially fishes in there Finland to buy, but we try.
External filter, and one powerful Eheim internal filter care of the filtration.

The plan now;

One or two Polypterus kind of fishes, maybe ansorgii or ornatipinnis.
Pair some Crenicichla, maybe celidochilus. How big celidochilus grow?
Some smaller piranha group. What piranhas doesn't grow over 20 centimeters?
Something else?

 

[Vellu]

Other plan, what do you think that;

One Polypterus ansorgiiThree Erpetoichthys calabaricus
Three Crenicichla celidochilus
Three Asterophysus batrachus

 

[Malawi-]

Piranhas that dont grow over 20cm are quite a few. I can think of 4 species from the sera that range from 6-7''. Post that in Piranha section for even more specific info on that.

 

[Vellu]

Piranhas that dont grow over 20cm are quite a few. I can think of 4 species from the sera that range from 6-7''. Post that in Piranha section for even more specific info on that.

Ok, I should forget this idea. Pygocentrus nattereri is too big piranha to me, also black piranha is too huge.

600 litre, is that ~150 gallons?

What fishes can live with one P. ansorgii and three Erpetoichthys calabaricus ? Crenicichla celidochilus maybe? Other Crenicichlas? Other mediumsizes cichlids? (Not oscars or Jack Dempeys)

Sounds this good ? One or two Polypterus, some Crenicichla pair, and some medium catfishes or plecos.

 

[synodontisjack]

severum are a good medium size cichlid also uaru

 

[Malawi-]

You have alot of options if its 150g.. What do you like? What do your LFS carry?

 

[Vellu]

You have alot of options if its 150g.. What do you like? What do your LFS carry?

Monster fishes, bigs and littles. For example bichirs and Chaca bankanensis.

If LFS mean Local Fish Store(?), we haven't very much rare fishes in stores, but some stores get every (almost) fish, what customer wants. And we can order fishes from Germany.

 

[Vellu]

Update.

My new plan;

15 Phenacogrammus interruptus
6 Synodontis nigriventris
4 Pantodon buchholzi
2 Polypterus senegalus
3 Erpetoichthys calabaricus
1 Gnathonemus petersii

Bottom

5 Synodontis schoutedeni
2 Synodontis ocellifer
1 Synodontis decorus

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pH 6,5
Temperature 26-27 celsius
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I think that would be an african biotope/geotope. But how about you, is that good plan?