Overview

Pleuronectidae is a family of flatfish commonly known as righteye flounders. Most species in this family lie on the sea bottom on their left side, with both eyes positioned on the right side of the body. The family includes commercially important fish such as halibut, plaice, and dab, which are valued for their mild, white, flaky flesh.

Origin and history

Pleuronectidae are found in marine waters worldwide, with the highest diversity in the North Atlantic and North Pacific. The family was first described by Rafinesque in 1815. Flatfish have been fished for centuries across Europe, Asia, and North America, with species like Atlantic halibut (Hippoglossus hippoglossus) and European plaice (Pleuronectes platessa) forming the basis of major commercial fisheries. Overfishing has reduced populations of several species, leading to regulated quotas and aquaculture programs for some members of the family.

Varieties and aliases

  • Halibut (genus Hippoglossus): Atlantic halibut and Pacific halibut are the largest flatfish species.
  • Plaice (genus Pleuronectes): European plaice is a common food fish in Northern Europe.
  • Dab (genus Limanda): Smaller flatfish, often used in British and Scandinavian cuisine.
  • Yellowtail flounder (Limanda ferruginea): A North Atlantic species.
  • Witch (Glyptocephalus cynoglossus): Also known as gray sole.
  • Petrale sole (Eopsetta jordani): A Pacific species sometimes grouped with Pleuronectidae.

Culinary uses

Pleuronectidae species are typically prepared by pan-frying, baking, grilling, or steaming. The flesh is lean, white, and mild, taking well to butter, lemon, herbs, and light sauces. Halibut is often grilled as steaks or fillets, while plaice and dab are commonly fried whole or filleted. In Japanese cuisine, hirame (olive flounder, Paralichthys olivaceus) is used for sashimi and sushi, though it belongs to the related family Paralichthyidae. European plaice is a classic fish-and-chips fish in the United Kingdom.

Cross-cuisine context

Pleuronectidae species have no direct analogue in Mexican cuisine, where freshwater fish like tilapia and catfish are more common, and marine fish such as huachinango (red snapper) and sierra (mackerel) are preferred. In Japanese cuisine, the closest analogue is hirame (olive flounder), which is used similarly for sashimi and sushi but belongs to the left-eyed family Paralichthyidae. In Korean cuisine, flatfish like gwangeo (plaice) are used in hoe (raw fish) and jjigae (stews). In Filipino cuisine, flatfish such as palad (tonguefish) are fried or cooked in sour stews like sinigang.

Notes for cooks

  • Halibut fillets are thick and hold up well to grilling; thinner fillets like dab cook quickly and are best pan-fried.
  • Fresh flatfish should have clear eyes, bright red gills, and firm flesh that springs back when pressed.
  • Substitution: Pacific halibut can replace Atlantic halibut in most recipes; plaice can substitute for sole or flounder.