Bastard halibut, more often called olive flounder in U.S. seafood listings, is a large-mouthed flatfish native to East Asian coasts. Both eyes sit on its left side, and it is raised for food.

Appearance

Appearance
Both eyes sit on the left side. Its mouth is much larger than the small mouth of a typical right-eyed flounder.

Look-alikes

Summer flounderParalichthys dentatus

Both have eyes on the left. Summer flounder has at least five dark back spots arranged in an X pattern and is native to the U.S. Atlantic coast; a fish caught there is unlikely to be olive flounder.

Why they get mixed upBoth are large-mouthed, left-eyed flounders.

Where it lives

Typical habitats
  • Coastal sandy seafloors
Range
It is native to the western Pacific around Korea, Japan, and China.
Preferred conditions
It usually rests on sandy bottoms in coastal waters.

Behavior

Diet
It catches fish and .

Conservation

IUCN Red List
NENot EvaluatedNot yet assessed
11 sources
  1. iNaturalist taxon API
  2. 국립수산과학원 넙치
  3. 인천 수산자원연구소 넙치
  4. 한국수산과학회 울진 넙치 식성
  5. U.S. FDA Seafood List
  6. 국립수산과학원 문치가자미
  7. 국립수산과학원 강도다리
  8. NOAA Summer Flounder
  9. 水産庁 ヒラメ生活史
  10. 北海道 ヒラメ
  11. FishBase Olive Flounder IUCN
Bastard Halibut (Paralichthys olivaceus) — identification, habitat & look-alikes | Moeyo