Blue Catfish Ceviche Posted in Blue Catfish, Seafood Recipes Print Recipe Blue Catfish Ceviche An invasive species that is downright tasty!! Author: Chef Kevin @ Myth & Moonshine Tavern Ingredients1 ½ Grapefruit juicedZest of ½ Grapefruit3 limes juicedZest of 1 lime1 Tbsp granulated sugar1 Tbsp Chopped cilantro1 lb of the freshest Blue Catfish available InstructionsCombine all ingredients in a gallon sized resealable bag. Shake to combine. Cut Catfish into 1” thick cubes. Marinate for exactly 4 hours. Cut a cube in half to determine doneness. Catfish is fully cooked when evenly opaque throughout.