The Cookie Crew

In my experience with honey gourami they can be aggressive to each other yes, but they tend not to be aggressive to other species. One kept singly in your tank might work well.  If you liked sparkling gourami, also take a look at licorice gourami. These are very peaceful fish. One of my favourites.  They would hurt a flea.

EDIT: regretting that statement already after 'water flea' popped into my head, as im pretty sure they would really enjoy eating them!... ahh well, just an expression.

When my nerites went through a period of going for nocturnal walks outside the tank, filter wool in the cable holes worked wonders 


You are looking for:
Smallish fish
Fish that can be kept alone or smallish numbers
Fish that swim in the upper regions of the tank
Fish that don't require either very soft or very hard water as yours is ~dH 9


The problem is that most smallish fish tend to be shoaling. Small non-shoaling fish tend to be bottom dwelling (eg dwarf cichlids) or gouramis.

I have fcmf's suggestion of peackock gudgeons/gobies in my tank which don't grow very big, would be fine for your water, can be kept as a pair or trio but are bottom dwelling.
I have Daisy's ricefish (Oryzias woworae) which are small, fine in your water, swim in the upper part of the tank but are shoaling fish that need a group of at least 8.


Another upper swimming fish to add to hatchets - hockey stick pencilfish http://www.seriouslyfish.com/species/Nannostomus-eques/, the main problem being that they are shoaling, and may be intimidated by some of your other fish.

I have peacock gudgeons and cherry shrimp. They may possibly attack the shrimps when I'm not looking, but I have witnessed a shrimp stealing food from under the nose - almost out of the mouth - of my big male gudgeon with no reaction from the fish. All my gudgeons tend to ignore the shrimps. Same with my honey gourami, I've never seen one take any interest in a shrimp.

The ricefish are a different matter. They do chase and kill juvenile cherry shrimp but not adults. Amano shrimps would be just too big for them and as they don't breed in fresh water, no baby amanos for them to eat.

There are many species of pencilfish, some very delicate, some very expensive. I used to have golden pencilfish (aka beckford's pencilfish) http://www.seriouslyfish.com/species/nannostomus-beckfordi/ which were fine in my tank but I have since read that males can be quite nasty towards each other. I did not witness this but then I did have more than 6 of them.
Before the incident with a very nasty infection of whitespot wiping out almost all my fish, I had mainly south American fish. Afterwards I restocked with Asian fish, but had I kept with south American fish, three lined pencilfish http://www.seriouslyfish.com/species/nannostomus-trifasciatus/ would have been high on my list.

Killifish!


Why didn't I think about them before? Probably because SF doesn't have many.

https://www.practicalfishkeeping.co.uk/features/articles/why-dont-more-people-keep-killies
https://www.practicalfishkeeping.co.uk/features/articles/2016/7/22/get-started-with-killifish
http://www.killi.co.uk/

Just had a butchers at your thread Sue...  The Stiphodons look and sound awesome...!!!  Love the Peacocks too...  They are winning the race at the moment in fact...!!!

The Lambchops are flying up the wish-list league table as well...  Being so small, I'm sure I'd get away with a shoal in terms of stocking levels... 

Might just be a trip to Wharf this affy, see if they have either the Lambchops or Peacocks in stock...   

Edit:  The Killifish do look amazing for sure...  They sound like one for a more experienced aquarist than myself though, as do the Stiphodons...  Which is a great pity... 

Just rang Wharf...  Peacocks & Lambchops in stock...!!!  Mad price difference though, lol...  The little Rasboras are very cheap whereas the Peacocks most definitely aren't...!!!   

Similar discussion taking place on the TFF UK forum, on my "The Cookie Crew" thread over there...  One lass, also called Sue, has just told me that she had problems with Peacocks, well, just one of them, nipping the tail fins of Neon Tetras, to the point of bits of tail missing and then having to re-home the Peacocks...     By her own admission, she feels it may have been a bit of a rogue fish as it was just one doing this, but that's what I am desperate to avoid, especially as catching fish is proving to be so tricky in my tank... 

Curved balls all over the place right now, all of which make deciding a bit of a task...  If the Peacocks may have an inclination towards fin nipping and potentially probing at the shrimp, then this drops them down the wish-list and makes the Espei Rasboras sneak into the top position...?

A friend of mine keeps Harlequins, but I always call them Raspberries...   

The notion that the Chops are smaller fits nicely in terms of bio load in the tank, in my case, and they do look to have slightly nicer colouring than the Harlies, which is a bonus... 

For now though, I think it might be pertinent to perhaps just wait a little while and keep monitoring the lone Platy...  He is a bit of a poop monster, so I figure that it would be wise to re-home him before adding new residents (he probably poops about the same as an entire shoal of Chops...!!!)... 

Certainly at the moment though, it is the Espei Rasboras that top the table... 

You can see the little Eheim "Pickup 45" internal filter at the back left corner there...  Great little piece of kit that is... 

Also, the original Platy, up in the top right hand corner...  Little minx, he is...!!!    

Like your planting. What are the clump of foreground plants behind the Marino moss ball ? I quite like the look of those.