Oo, forgot to write that we did pick up that tank. It's 72"x18"x23" which brings it to 129g according to a volume calculator that I trust. Of course it's less when you put in substrate and such.
So the main fish I was going with were rosy barbs..but they're more sub tropical, like the rose line sharks. I think giant danios are too?
Has anyone had arulius or filamentosus barbs?
I know it's been a couple weeks since you asked, but I have both. I've had Arulius (mine are actually False Arulius Barbs) for a couple years and they breed like rabbits. They are great looking fish, especially in their breeding colors. The males tails will get blood red and they will have pinkish/purple hues on their bodies. The males have awesome streaming dorsal fins. My largest male is about 4" and the females are about 2.5 to 3".
Both Arulius and Filaments are very active; they add lots of movement to the tank. In my experience, the Arulius barbs are a bit more timid than the Filaments. Filaments kinda remind me of goofy goldfish constantly begging for food, whereas the Arulius are a little more aloof. The Filaments typically swim in the upper 50% of the water column whereas my Arulius will more typically stay in the lower 50%. The male Filaments also grow an awesome streaming dorsal fin and they have nice colors too, especially in breeding dress. Their tails will turn a pinkish/red and their bodies will have a greenish/blue iridescence. They grow larger (Males up to 7").
Temp range for them is 68-78F.
Not sure if it's a deal breaker, but in my experience both of these fish devour plants. I added a few plants and after two days all that was left was a twig; all leaves were consumed.
Here's a pic of the Largest Male Filament (6.5"):
and the Arulius:
