Compatibility Advice - Dwarf Rainbowfish / Ram

Hi all, I'm looking for a bit of advice in relation to Dwarf Rainbowfish as I've never kept these before.

I have a 180l tank which currently contains Cardinal Tetra's, Guppies, Platies, Mollies, Cory's, a Dwarf Gourami (male) & a BN Plec - all are getting along well.

I'm looking to add a few larger fish to my community (more of the Gourami size) that will swim around the top/middle of the tank and Dwarf Rainbowfish are my current preference. I'm probably looking at 4 in total; 1 male + 3 female, and wondered whether these were likely to fit in well with my existing community?

The fish profile on here looks favourable but I'd like to hear from anyone with experience of keeping this particular fish.

I'm also really like Rams and am considering adding one to the tank, but I'm a bit more wary of this - in particular how well it may get on with the Gourami and whether it could be aggressive with some of the smaller species (Guppies, Tetra's)?

Any advice would be appreciated.

Thanks for the reply Sue.

Good news on the Rainbow's - I thought they'd be ok.

With regards to the Rams' - I haven't got a hardness test to be fair (probably should get one) but I know I am in a soft water area + my tank pH is on the acidic side. I don't have the temp in the high 20's though - around 24/25. I'd had really got my eye on a gold variety but the same store which has the gold's also has Bolivian's and they still look good - might have to consider one.

Are Ram's generally ok living solitary?

I agree about bolivian rams. They can be kept in pairs if the tank is too small for a group, but rams of both species can be very picky when it comes to forming a mated pair and just getting a male and female does not mean they will like each other.

Re hardness, your water company's website should have that info, though it can be a bit tricky to find on some.

Just how acid is your water - the tank water that is, not your tap water? Dwarf rainbows are OK down to 6.8, though rainbows as a group do tend to prefer alkaline water.