Olfish is pleasantly rich in taste and can be substantially cheaper than some other fish species, leading to some fish sellers to intentionally mislabel it as butterfish or even codfish despite the utter lack of relation. This leads the consumer to often eat large servings, as they assume it is a fish they are familiar with, and then some may experience a laxative effect. Because of this, Japan and Italy have imposed an import ban on oilfish and Australia has banned oilfish from being sold as food. The US FDA has warned consumers about potential mislabeling of oilfish, but has concluded that any laxative side effects that occur are at worst, uncomfortable, but pose no health risk.