a colony of large Geophagus such as Altifrons or Abalios would be beautiful paired with an Arrowana in a 10x3x3 footprint tank.
Altifrons/Abalios are slow growers compared to other SA cichlids. They are typically peaceful but become very territorial towards
their own as they get larger and/or begin breeding. Water quality is important as they get older and larger, like other large cichlids
they are very susceptible to "Hole in the Head" disease.
here is an old vid of my 8x2x2 Altifron tank
[video=youtube;paUhj_rSMto]http://www.youtube.com/watch?v=paUhj_rSMto[/video]
Altifrons/Abalios are slow growers compared to other SA cichlids. They are typically peaceful but become very territorial towards
their own as they get larger and/or begin breeding. Water quality is important as they get older and larger, like other large cichlids
they are very susceptible to "Hole in the Head" disease.
here is an old vid of my 8x2x2 Altifron tank
[video=youtube;paUhj_rSMto]http://www.youtube.com/watch?v=paUhj_rSMto[/video]