Flatmouth sea catfish
{{Short description|Species of fish}}
{{Speciesbox
| image =
| genus = Plicofollis
| species = platystomus
| authority = (Day, 1877)
| synonyms = * Arius platystomus Day, 1877
- Tachysurus platystomus (Day, 1877)
}}
The flatmouth sea catfish (Plicofollis platystomus), also known as the flat-mouthed catfish or the flatmouth catfish,[https://www.fishbase.de/ComNames/CommonNamesList.php?ID=1292&GenusName=Plicofollis&SpeciesName=platystomus&StockCode=1309 Common names of Plicofollis platystomus] at www.fishbase.org. is a species of catfish in the family Ariidae.{{fishbase species |genus=Plicofollis |species=platystomus |month=July |year=2019}} It was described by Francis Day in 1877, originally under the genus Arius. It inhabits estuaries and coastal marine waters in India, Myanmar, Bangladesh, Sri Lanka, and Pakistan. It dwells at a maximum depth of {{convert|50|m|ft|abbr=on}}.[https://www.iucnredlist.org/species/155202/115285269 Plicofollis platystomus] at the IUCN redlist. It reaches a maximum total length of {{convert|31|cm|in|abbr=on}}.
The diet of the flatmouth sea catfish consists of benthic invertebrates.[https://www.fishbase.de/TrophicEco/FoodItemsList.php?vstockcode=1309&genus=Plicofollis&species=platystomus Food items reported for Plicofollis platystomus] at www.fishbase.org. It is considered an important foodfish, and its meat is marketed fresh. Due to a lack of known significant threats to its population, it is currently ranked as Least Concern by the IUCN redlist.