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U.S. Department of Health and Human Services


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RFE Page 1 for Glyptocephalus cynoglossus, Gray Sole, FDA Market Mane: Sole or Flounder

Regulatory Fish Encyclopedia Page 1:
High Resolution Images


Glyptocephalus cynoglossus
Gray Sole
FDA Market Name: Sole or Flounder


DISCLAIMER concerning the use of images and data in the Regulatory Fish Encyclopedia (RFE).

Gray Sole fish imageWhole Fish: glypcyno I94-001

Small (50 Kb) hi-res image | Large (200 Kb) hi-res image
Gray Sole fillet imageMPF: Fillets (skinless- inner/outer views): glypcyno I94-002/003

Small (50 Kb) hi-res image | Large (200 Kb) hi-res image

The Regulatory Fish Encyclopedia (RFE) is a compilation of data in several formats that assists with the accurate identification of fish species. It was developed by FDA's RFE Team of scientists at the Seafood Products Research Center (SPRC, Seattle District), and the Center for Food Safety and Applied Nutrition (CFSAN) to help federal, state, and local officials and purchasers of seafood identify species substitution and economic deception in the marketplace.

The RFE includes for each of a number of commercially relevant fish species for sale in the U.S. market high-resolution photographs as their scanned digital images (jpeg format) of whole fish and their marketed product forms (including fillets, steaks, or whole crustaceans) which may be used for visual comparison to a whole fish in question (or its marketed product form). The RFE also includes illustrated unique taxonomic characteristics (physical properties such as size, shape, color, etc.) for selected species to aid in identification. In addition there is chemical taxonomic information consisting of species-characteristic biochemical patterns which may be compared quantitatively to patterns obtained by an appropriate laboratory analysis of the fish species specimen in question. Currently the RFE includes tissue protein patterns determined by Isoelectric Focusing (IEF) electrophoresis; CO1 Mitochondrial DNA sequence patterns determined by DNA "Barcoding" are currently being determined.

A more detailed description of the RFE and the IEF methodology is available.

This DISCLAIMER pertains to the use of the RFE and to use of the images and data therein.