If you had a 200 gallon tank....

[Earthgirl]

I would get

Scleropages jardini
Ageneiosus brevifilis
Leiarius pictus
Hemisorubim platyrynchos
3x Sorubim lima
Pimelodus albofasciatus
2x Pimelodus ornatus
Megladoras irwini
2x Hoplosternum thoratacum
3x Agamyxsis pectinifrons
Crenicichla sveni
Astronotus ocellatus, Oscar
3x Heros severus, Green severum
Satanoperca jurapari
Polypterus ornatipinnus
Polypterus delhizi
Polypterus senegalus
Chrysichthys ornatus
Potamotrygon motoro, FW stingray

Oh wait, i already have

 

[The-Wolf]

I would have a massive school of bengal danios or maybe glowlight danios, or danio hikari, or.... oh well you get the idea

 

[Ben]

i would sell it to some dum@$$ for way to much and buy a 500 gal

then maybe i would buy:

option 1
1 dovvi
option 2
1 beani
option 3
a massive school of neons and blue rams
option 4
assorted big cichlid schools like a few firemouths, a coloney of convicts blue acaras, electric blue JDs,some oscars and BPs and green terrors
option5
a school of Black Ghost Knifes

i wouldnt mind five 500 gal tnks so i could have all my options though

 

[mwm]

arrowana,Dual oscars , convict, jack dempsey, BIG pleco, Jag

 

[canarsie11]

 

[rvm]

Pretty much the same as I already have in my 140g, but a with a few more eartheaters!!!

 

[NickT]

A betta...he will enjoy the space

 

[Paul_MTS]

cram it full with lovely plecs then have balas, clowns loach and other catfish.

 

[SailfinGirl]

Guppies. Lots and lots of guppies. And I'd put my sailfin pleco in there.

 

[Doggfather]

Black Arowana
Discus
Big school of rummy nose tetras
3 Harems of Apistos
Plecs

 

[cichlidmommy]

I would have as many Convicts and Dempseys I could fit in there.

 

[White Whale]

One tiger shovelnose catfish, 3 freshwater barracudas, and a school of bala sharks.

 

[pnyklr3]

I'm with Doggfather and the apistos. I'd love to have another harem or 5 of Cockatoos!!!!

 

[LadyMinion]

I'd put Martha in it of course!

 

[Crystal]

I think I would have to make one heck of a nice cichlid tank.