At Trader Joe's, impeccable snacks at incredible prices can make grocery shopping feel like a steal. But according to one group of customers, the company is actually scamming shoppers -- and not in a savory way.

Trader Joe's is being accused in court of under-filling cans of tuna after tests revealed that most of their 5-ounce cans actually contained less than 3 ounces of tuna , as first reported by the New York Post. Yikes.

The class action lawsuit, filed Tuesday in New York state, says tests conducted by the U.S. National Oceanic and Atmospheric Administration found that "nearly every single can" of Trader Joe's 5-ounce tuna tested contained between 2.43 and 2.87 ounces of tuna.

According to government standards, a 5-ounce can of tuna must contain at least 3.23 ounces of meat (or 2.84 ounces, in the case of skipjack tuna). But Trader Joe's canned tuna fell an average of roughly 17 percent below the federally mandated minimums across six tested store brand varieties.

Trader Joe's does not "comment on pending litigation," national public relations director Alison Mochizuki told The Huffington Post.

This scuffle could turn sweet in the end: StarKist handed out $50 tuna vouchers after settling a similar class action lawsuit earlier this year, Grub Street notes .

Maybe we'll stick with salmon until this one's sorted out.

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