Ancylopsetta Cephalopsetta Citharichthys Cyclopsetta Etropus Gastropsetta Hippoglossina Paralichthys Pseudorhombus Syacium Tarphops Tephrinectes Thysanopsetta Xystreurys Large-tooth flounders or sand flounders are a family, Paralichthyidae, of flounders.

[3] They are found in temperate and tropical waters of the Atlantic, Indian and Pacific Oceans.

[4] Several species are important commercial and game fishes, notably the California halibut, Paralichthys californicus and the Pacific sanddab, Citharichthys sordidus.

Phylogenetic analyses have long indicated the non-monophyly of this family e.g.,[5] and two lineages have been consistently apparent.

A formal description of Cyclopsettidae in 2019 created this family consisting of four genera: Cyclopsetta, Etropus, Citharichthys, and Syacium corresponding to the previously recognized Cyclopsetta group.