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Hi all, this is my first post.
I currently have a tall 30 gallon tank (almost cube-shaped), so a smallish surface area.

I have 1 boesmani rainbow, and 2 other rainbows, sold as "australian rainbows", though I don't know the true species. They are silvery with a dark purplish line down the side. These are about 3 inches each
There are also 3 neon rosy barbs and a small bristlenose pleco.
The fish are all doing well. I've had the rainbows about 2 years. The rainbows have great colour first thing in the morning!
I'd like to change thing up a bit, so I'd appreciate some opinions on my ideas.

Idea 1: return the barbs, or give them away and get a pair of kribensis or something similar. Would they get along with rainbows & a pleco?

Idea 2: give away the barbs and get a New Guinea Red rainbow. I know rainbows need to live in a group, but are they happy if the group consists of other types of rainbows? I'm not concerned about interbreeding, as I don't have room for juveniles, so I would cull any that aren't eaten. I haven't had any breed (successfully) so far.

I do enjoy the rosy barbs, but as I said, I would like a change.
Sorry about the long post. Any other ideas would be appreciated too.

Welcome to Fish Profiles!
I have 3 of those same "australian rainbows" too. Mine have have really colored up. I think that the red new guinia would probably be fine with your other rainbows. It would be even better off if you would give it a few other New Guianas. good luck.

Thanks for the reply, clownloach!
I'm beginning to think I might be better off getting 1 or 2 more boesmani rainbows instead of introducing another different species at this point - maybe my Boesmani will be a bit happier that way