Suggestions: Tankmates for non-competitive fish?

[Eridinus]

Hi guys.

I currently have a 55 gallon aquarium (101cm x 41cm x 50cm) up and running with the following fish:

8 Bronze Corys
6 Corydoras duplicareus
4 Amano Shrimp
6 Otocinclus (Soon)

and I might be getting some Psuedomugil luminatus (Red Neon Rainbow) soon.

My water is fairly hard, and my pH is around 6.8.

The luminatus are not competitive eaters, and therefore I don't know what suitable tankmates I can have that will also be non-competitive.


Any suggestions?

 

[Byron]

My water is fairly hard, and my pH is around 6.8.

These numbers are a bit confusing...do you know the actual GH? Moderately hard or harder water is more likely to have a basic (above 7.0) pH. Not saying it is not possible, just unusual so it needs pinning down.

 

[Eridinus]

I use tetra test strips and they say its between 6.8 and 7.2, but looks like more towards the lower end. Hardness is 13 degrees german.