Bún cá — Vietnamese fish noodle soup — is a niche dish in Philadelphia. The city's Vietnamese restaurants lean heavily toward beef pho and bun bo hue, making fish-based noodle soups a harder find. But the spots that specialize in regional Vietnamese cooking often have a version worth seeking out.

Cafe Hai Van top-pick

Cafe Hai Van specializes in central Vietnamese cuisine — their Mi Quang and Bun Bo Hue are the draws, but their fish-based soups are also excellent. When available, their bun ca features a tomato-dill broth with chunks of fish, pineapple, and okra that tastes like home cooking from the coast of central Vietnam.

Nam Vang best-value

Nam Vang's menu is built around noodle soups — their Hu Tieu Nam Vang is the star, but their clear noodle soups include fish-based options. The broth here is clean and nuanced, with a fish stock that's deeply savory without being fishy. This is the kind of place Vietnamese families visit for a proper bowl of noodle soup.

Pho Cyclo Cafe hidden-gem

Pho Cyclo's menu includes a variety of specialty noodle soups beyond pho. Their seafood-based noodle options occasionally feature fish soup preparations, and the family-run kitchen knows their way around Vietnamese soup traditions beyond the usual beef standards.nnCa fish noodle is a dish you have to know to ask for in Philadelphia — but these three kitchens deliver the tomato-dill broth and fresh fish that makes it a hidden gem worth ordering.