The short answer
A 60 litre tank is a modest community — room for two small groups on different levels rather than one crowded mix. A common balanced plan is a school of 8–12 nano tetras or rasboras up top plus a group of 6 dwarf corydoras below, with shrimp or a snail as cleanup. Keep species few and stock gradually.
Stock by needs, not a formula
The old “inch of fish per gallon” rule is unreliable because it ignores adult size, bioload, schooling needs, temperament and filtration. A 60 litre tank is more forgiving than a nano, but it is still small enough that overstocking shows up as algae, cloudy water and stressed fish. Plan around each species’ real requirements and leave yourself headroom.
Sensible 60 litre stocking ideas
- 10–12 neon or harlequin rasboras + 6 pygmy corydoras
- A small honey gourami pair with a nano tetra school
- 6–8 platies or guppies kept as a livebearer tank
- A betta with a peaceful shoal and a snail cleanup crew
Avoid fish that grow large or need long swimming lanes (angelfish, larger barbs, most cichlids). One well-chosen school with numbers beats several thin, stressed groups.
Before you add anything
Always cycle the tank before stocking, then add fish a few at a time over several weeks so the filter keeps pace. Keep up weekly water changes and acclimate new fish slowly. For the next size up, see how many fish in a 100 litre tank, and for the tank itself browse the best 60 litre aquariums.