Evening all,
I'm rather keen to go down the Angel and Severum route, they're rather colourful and peaceful aren't they?!...
Cheers all,
Ryan
Well thats all the motivation I need to butt into this thread
If you want to keep your dwarfs in this tank then its best to go down the South American route.
From the fish in your signature I would look to move these species to the new tank - 1 L333, 2 Umbrella Cichlids, 2 Cockatoo Cichlids, 5 Emperor Tetras, 6 Leopard Cories.
Then I would up your Emperor Tetras to 10-15 and the same for the Leopard Cories - these will act as dither fish with the following suggestions -
In a 450 liter tank following a theme of South America and housing your current dwarfs I would probably look at doing something like
1 Heros sp. Rotkeil (Rotkeil Severum)
4 Angelfish - P.Scalarae - any colour variants would work they are all the same species
4 Satanoperca Auticeps (or any of the Satanoperca species) - though any of the Surinamensis Geophagus or sp. Tapajo would work in this tank, but the Satanoperca species are more peaceful.
2 Apistogramma Borelli
2 Apistogramma Cacatuoides
8 Spotted Headstanders
15 Emperor Tetras
3 L333 - maybe try to breed them?
15 Leopard Cories
So here are my reasons for why I think this set up would work well. The Angelfish would have the upper levels in this tank to themselves though the Severum will invariably swim all over the place. Angelfish and Severums are a good combo that often live together in good nature.
The Satanoperca are a type of eartheater which are one of my favorite families of fish. Satanopercas are one of the most peaceful of the family and also a nice mid sized genus that depending on species gets to between 8-12 inches. The Auticeps I suggested is the smallest of the genus and IMO the most beautiful. Though like I say eartheaters from the Geophagus species would work like Geophagus Surinamensis, Geophagus Altifrons and Geophagus sp.Tapajo Red Head - though the Satanopercas are much more peaceful than the Geophagus species but these are a very peaceful family in general. Though avoid species like Geophagus Brasiliensis and Geophagus Stiendachnary as these are more boistrus and quite different to the other species I mentioned.
In the wild Apistogramma species are one of the most common fish all over South America and as such are often found alongside the larger cichlids I suggested above. In your tank the interactions between the Apistos and the Satanopercas will be quite peaceful with the Apistos possibly showing more aggression to the other fish when they get too close to their spawning site. I would set the tank up with little hide aways for the apistos to breed and hide in that is too small for the other species of cichlid to fit in - this would be a last resort for them to flee too but all but the angels I would say are a very safe mix. But then again I would class the angels as low risk again as the apistos and angels inhabit totally different regions of the tank so would rarely clash in a tank of that size if ever.
The headstanders and emperor tetras would work as dithers for these fish, the headstanders would be dithers more for the larger cichlids and the emperors would be dithers for the apistos, the emperors usually stay higher up in the water column than some tetras and this would give the apistos confidence to come out more in a large tank with larger fish. It will also help the eartheaters when they are youngsters.
The cories will help keep the bottom tidy and the plecs could turn into a breeding trio if you can find the right genders and it will add an other dimension to the tank with regards variety of species. In this set up you would have quite a lot of levels of fauna from the Amazon in your tank between small catfish, sucker mouth catfish, small cichlids, eartheaters, characins, larger characins and so on
Then with the remaining fish I would split them between your 110 liter tank and your 64 liter tank, perhaps giving the rams the lead fish in the 110 liter tank and giving them a high temperature and low ph that they need for the long term care

Almond leaves will help you with the ph and is a good alternative to chemicals (and somewhat safer)
I hope thats helped

This stock list is by no means exhaustive of your options there are still a lot more fish you could mix with your apistos with good success in a 450 liter tank. With a South American Cichlid tank the none cichlid species are just as important as the cichlids for the success of the tank and as a result you get a larger variety of species in the tank.
By all means though investigate the african side of the hobby its something I really want to do at some point and wish I knew more about them

Certainly a contender for my tank number 2 plans
Wills