Description

Flagtail Porthole Catfish (Dianema urostriatum)
Dianema urostriatum, often referred to as the Flagtail Catfish or simply “Flagtail,” is a popular freshwater species among aquarists. Known for its striking appearance and lively behavior, this catfish is native to the rivers and streams of South America, particularly the Amazon Basin.
Appearance
Flagtail Porthole Catfish exhibit a unique and appealing coloration, characterized by a pattern of dark spots and stripes against a lighter background. Their bodies are elongated and streamlined, with a distinctive flag-like tail that gives them their name. Juveniles typically display more vibrant colors, which tend to fade slightly as they mature.
Habitat and Behavior
In the wild, these catfish inhabit fast-flowing waters, where they seek shelter among rocks and submerged structures. They are predominantly nocturnal, becoming more active during the night when they hunt for food. In captivity, providing hiding spots and a spacious environment is crucial to mimic their natural habitat and reduce stress.
Diet
Flagtail Porthole Catfish are omnivorous, feeding on a varied diet that includes smaller fish, crustaceans, and plant matter. In an aquarium setting, they thrive on high-quality pellets, frozen or live foods, and vegetables. It’s important to ensure they receive a balanced diet to promote their health and growth.
Tank Requirements
For those looking to keep Flagtail Porthole Catfish should keep the water at a temperature between 75°F and 82°F (24°C to 28°C) and have a pH range of 6.5 to 7.5.
Compatibility
While Flagtail Porthole Catfish can be kept with most other species, they are relatively peaceful enough and will not bother most fish.
The Flagtail Porthole Catfish is similar to other bubble nesters and will create a bubble nest at the top of the water using plant matter and twigs.