I agree with MP_cichlid.
In a tank that size you have some great options open to you. Personally speaking I get a little bored of one big fish,but that's just me.
As MP_cichlid pointed out the interaction between species and species diversity has much longer lasting appeal to me.
In a big tank like that you don't want too many potential trouble makers as catching them and addressing the situation could be a pain in a tank that size.
I would also like to observe breeding behaviour without being over run with fry.
A carefull balance can be achieved by choosing the right species.
A central American biotope is very achievable in a tank that size and with some dramatic aquascaping you could have a very enviable display.
A harem of large veija and a large flock of thorichthys or Rheoheros would look amazing complimented by a few hundred swordtails.
However as I said I like diversity and nothing offers diversity like a south American tank.Catfish,tetras,cichlids and oddballs galore.So much choice for a amazon theme.
If the tank were mine(I really wish it was)
I would stock something like this.
Upper levels I would have about 30 pink tailed chalceus. A beautifully large shoaling characin that stay near the surface.
For the middle I would have about 40 silver dollars.In large groups they look amazing as they flock together and glide across the tank.I would also have 6 wide bar myleus,another beautiful shoaler.
For cichlids I think I would add about 6 large uaru,big beautiful and generally quite peacefull.
And for the bottom and also fry control I would have 8 ornate pims or a couple of small stingrays.
I think that stocking would keep me satisfied for years.
The tank would be active you can observe breeding behaviour and you won't be over run with fry.
However that's just my taste,you may be happier with something completely different.
Stanzzzz7
he would probably do a south or central American biotope lol. I've seen his old GT tank and that was amazing. If I were you, I wouldn't do the dovii. It sounds like you are looking for more of a community setup, with a lot going on. A dovii would be amazing and certainly entertaining however they are more personable, although IMO most large cichlids are better kept in pairs. I would recommend a cichlid community. Something with a mix of American cichlids. I would say with a tank this size a combination of amphilophus species, maybe some smaller parachromis and what not. Definitely a few more options. But I think you would have enough space for a group of those cichlids to co-exist and have their own territory. It would offer a little more action and movement in the tank. One thing I love about those types of tanks is watching the interactions between each individual fish, It's so entertaining to analyze cichlids social behavior.
