A former Top Chef contestant is betting that Philadelphians will eat their way through an ecological crisis. Rumblefish, a new fast-casual Trinidadian restaurant from chef Chaz Brown, plans to open at 1700 N. 3rd St. in Olde Kensington this November, serving fried fish built around invasive species like Chesapeake Bay blue catfish, lionfish, and northern snakehead.
According to WhatNow, Rumblefish will operate primarily as a takeout spot, with the restaurant debuting alongside Clifford Brown and John Skeele. Chef Brown built his resume at some of the city's most demanding kitchens, working as chef de cuisine at the former Union Trust Steakhouse in Philadelphia and at Fatty Crab in New York, credentials that go back further still: The Philadelphia Inquirer reports he also cooked at Le Bec-Fin, Tinto, and Nobu before his 2011 turn on Bravo's Top Chef.
The restaurant's 900-square-foot storefront sits at the corner of Cecil B. Moore Avenue, a major commercial corridor linking North Philadelphia neighborhoods, and per the Inquirer's reporting will include counter seating and a 25-seat covered outdoor patio, operating seven days a week for lunch and dinner.
From Bahamian Reefs to a Trinidadian Fry Menu
The idea for Rumblefish didn't start in Philadelphia. Brown lived in the Bahamas for part of his career and ran a couple of restaurants there, according to the same WhatNow report, and it was during that stretch that lionfish began threatening coral reefs and grouper populations. The Bahamian government asked local chefs to develop ways to serve the invasive species, and Brown responded by preparing lionfish as ceviche and fried fish.
The Inquirer's reporting adds texture to that origin story, noting the concept traces to 2017, when Brown was consulting in the Bahamas and went spearfishing for snapper and grouper, watching lionfish tear through coral reefs before he began organizing local lionfish cooking competitions. Lionfish are native to the Indo-Pacific and have no natural predators in the Atlantic, a mismatch that has let their numbers explode wherever they've spread.
When Brown returned to the United States, he discovered a parallel problem much closer to home: Chesapeake Bay blue catfish had exceeded sustainable population levels, according to WhatNow, and the fish were eating crabs, mussels, and oysters. The ecological backstory runs deeper still. Blue catfish were intentionally introduced to Virginia rivers in the 1970s to build a sport fishery, but because they tolerate brackish water, they spread across the entire Chesapeake Bay watershed, where they now consume native blue crabs, striped bass, and Atlantic sturgeon, according to NOAA Fisheries. The fish can live up to 20 years and grow past 100 pounds.
Congress Weighs In on the Catfish Problem
The scale of that invasion has drawn federal attention. In March 2026, the U.S. House of Representatives passed the bipartisan MAWS Act, which establishes a NOAA pilot program to fund animal food manufacturers purchasing Chesapeake Bay blue catfish from watermen, aiming to remove millions of pounds of the fish, per the U.S. House Natural Resources Committee. The program is designed to build long-term supply infrastructure for invasive species, a policy backdrop that helps explain why a restaurant like Rumblefish matters beyond its dining room.
Green crabs, another target on Rumblefish's menu, carry their own long history of damage. European green crabs have been established on the U.S. East Coast since 1817 and rank among the world's 100 worst invasive species, according to the Smithsonian Institution, largely due to their destruction of native soft-shell clam fisheries and eelgrass beds along the Atlantic coast.
A Small, Curated Menu Built on Local Partnerships
At Rumblefish, invasive species will make up roughly half the menu depending on the season, per WhatNow's reporting, with fried fish served alongside french fries and coleslaw. Brown described the offerings as deliberately limited, saying his menu is very small and curated. Alongside blue catfish and lionfish, the restaurant plans to serve northern snakehead — a predatory fish established in the Chesapeake Bay watershed — and Caribbean beverages including sea-moss drinks and Trinidadian Solo Kola Champagne, the Inquirer reports.
The batter behind that fried fish uses Anson Mills' Antebellum Fine Yellow Cornmeal from Columbia, South Carolina, made from heirloom corn using traditional milling practices, according to the Daily Meal. That cornmeal requires refrigeration to stay fresh, according to the Daily Meal, and Rumblefish will manage that supply constraint directly rather than relying on shelf-stable substitutes, per WhatNow.
Brown is also drawing on family ties for flavor: the restaurant will use spices from his family farm in Trinidad, with a relative named Mark sending barrels of dried spices, according to WhatNow. Rounding out the local sourcing, Rumblefish will use Goodland Food Company's hot sauce and produce from Green Meadow Farm. For bread, Angelo's Bakery in Conshohocken is baking po'boy-style sandwich rolls for the restaurant, per the Inquirer's reporting.
The Economics of Eating an Invasion
Whether diners will embrace the mission as readily as the menu remains an open question nationally. An April 2025 study in the Agricultural and Resource Economics Review, cited by Hoodline's coverage of a Florida lionfish tournament, found that consumers' willingness to pay for invasive lionfish dishes stayed lower than for traditional commercial fish even after learning about the environmental upside of eating them. That pricing gap, paired with seasonal menu availability, is a central tension for Rumblefish as it builds a business around fish nobody asked for.
Brown, whose father is from Trinidad, seems undeterred by those headwinds. He told WhatNow that Rumblefish could help create serious change if its small effort grows — a wager that a 900-square-foot storefront on Cecil B. Moore Avenue can do for Philadelphia's plates what lionfish tournaments have tried to do for Florida's reefs.
