Porthole catfish (Dianema longibarbis)

General data
- Main name: Porthole catfish
- Habitat: Freshwater
Classification
- Genus: Dianema - Dianema
- Family: Callichthyidae - Armored catfishes
- Order: Siluriformes - Catfishes
- Class: Teleostei - Ray-finned fishes
- Superclass: Osteichthyes - Bony fishes