Percopsidae

{{Short description|Family of fishes}}

{{Automatic taxobox

| image = Percopsis omiscomaycus.jpg

| image_caption = Percopsis omiscomaycus

| taxon = Percopsidae

| authority = Agassiz, 1850

| subdivision_ranks = Genera

| subdivision_ref = {{cite book|last1=Nelson|first1=Joseph S.|last2=Grande|first2=Terry C.|last3=Wilson|first3=Mark V. H.|year=2016|title=Fishes of the World|edition=5th|publisher=John Wiley & Sons|isbn=9781118342336}}{{cite journal|last=van der Laan|first=Richard|year=2016|title=Family-group names of fossil fishes|url=https://www.researchgate.net/publication/303911230}}

| subdivision =

• †Amphiplaga {{small|Cope, 1877}}
• †Erismatopterus {{small|Cope, 1870}}
• †Libotonius {{small|Wilson, 1978}}
• †Lindoeichthys {{small|Murry et al., 2020}}
• †Massamorichthys {{small|Murray, 1996}}
• Percopsis {{small|Agassiz, 1849}}

| synonyms =

• Libotoniidae {{small|Grande, 1988}}{{cite journal |last1=Murray |first1=A.M. |last2=Brinkman |first2=D.B. |last3=Newbrey |first3=M.G. |last4=Neuman |first4=A.G. |year=2020 |title=Earliest North American articulated freshwater acanthomorph fish (Teleostei: Percopsiformes) from Upper Cretaceous deposits of Alberta, Canada |journal=Geological Magazine |volume=157 |issue=7 |pages=1087–1096 |doi=10.1017/S0016756819001328|bibcode=2020GeoM..157.1087M }}

}}

Image:Amphiplaga brachyptera.jpg

Percopsidae is a family of fish in the order Percopsiformes, with one extant genus with two species, both endemic to North America, and five described fossil genera.{{FishBase family | family = Percopsidae| month = April | year = 2012}}

They are small fish with weak fin spines, and an adipose fin similar to those of trout. They feed on insects and small crustaceans.{{cite book |editor=Paxton, J.R. |editor2=Eschmeyer, W.N.|author= Cohen, Daniel M.|year=1998|title=Encyclopedia of Fishes|publisher= Academic Press|location=San Diego|page= 129|isbn= 0-12-547665-5}}