Stocking Question

[Seal36]

I have a 40 litre tank which at the minute has 2 kribensis 1,1,0 and 6 rummy nose tetra 0,0,6 in I was wondering if I was stocked to capacity or if I could add:

Neon tetras
5 banded barbs

I know that the rummy nose tetras are very active fish but my tank is longer than it is higher and gives them lots of room to swim around in and my tank is not square it is half an octagon.

I know you guys are all about less fish in to make sure that the tank is good and so is the fishes health but I do a 10% water change every other day and then on a Saturday do a 50% water change.

 

[Fishmanic]

in my opinion you are already fully stocked and probably a bit overstocked---the kribs get to be 4 inchs when grown and if you go by the rule one inch of fish per gallon of water,  then just the kribs  would make for a proper stocking

 

[Seal36]

Ok so would you take the rummy noses out and put the neons or 5 banded barbs in as they are not so big because when I tried it with just kribensis because there were no other fish to chase they just started attacking each other. Or if someone can suggest some small dither fish that don't live in shoals that could go with the kribensis and not take up so much room that would be good. Also online I keep reading that it's 1 inch of fish per litre of water is that not true then and also is for gallons uk or US.

 

[Fishmanic]

one inch of fish per 4 litres or per one gallon is the general rule but understocking is preferred than overstocking---if overstocked be prepared to do more water changes and have a filter that is oversized for the tank size