All posts regarding the care and breeding of catfishes from other parts of the world (North America, Europe and Australia). If you don't know where your catfish is from, post a query in the identification category.
Whilst it's not commonly asked about Channel cats, it's a fairly common question in general.
The answer is that the fish will grow new ones given good water conditions (and possibly removal of the source of the loss, e.g. sharp stones, barbel[1]-eating fishes, etc).
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Mats
[1]Barbel is the technical name for "whisker". Not to be confused with "Barbells" used in a gym!