Are corydoras hard or soft water?

In nature they are (very) soft water fishes. Most of the ones you buy are tank raised and raised in whatever water - but some of the rare sort are wild caught (and oddly enough pygmy are often wild caught). Wild caught fishes might have a harder time adjusting to moderately hard water but in most cases it can be done. There are many species of cory and some of them are more fragile than others.
 

Random Great Thread

Latest threads

Top Bottom