Best Soft Water Aquarium Fish

Edited by Ivan F.

Soft water suits many small tropical species, and it is often ideal for colorful schooling fish.

How we pick: Species whose sourced hardness range reaches down to 4 dGH or lower and whose pH range reaches 6.0 or lower.

Fitting the same tank size does not mean these species can live together. Check each species' tank mates before you buy.