My 220 has atypical dimensions, 83"l x 25.5"w x 29"h. I was going to attempt a planted tank that may require regular restocking. The bennefit to going South American is my ability to pull plants from the CO2 system equipped 150g Amazonian tank, rather than constantly purchase them.

I am considering the acquisition of a South American black arowana (Osteoglossum ferreirai) and developing the 220 gallon tank around him. Whether or not I do so depends heavily on how interesting I think compatible tankmates would be as I prefer multi-species tanks. I am something of a purist and am only willing to consider other South American species, preferably from the Rio Negro river basin (but not necessarily a deal breaker). I am doing my own research, but would appreciate any suggestions or experience that you guys would like to share. Thanks in advance for any help.

I have v bifaciatus ,gold severums ,rokelli severums and green terrors and a couple of jacks with mine and not much of a problem until feeding time all the other fish have a tendecy to hog all the frozen shrimp I throw in there.