Flagtail Porthole Catfish: A Unique Freshwater Addition
The Flagtail Porthole Catfish is a captivating species that brings both beauty and personality to any freshwater aquarium. Known for its distinctive tail pattern and peaceful demeanor, this catfish is an excellent choice for both novice and experienced aquarists seeking a striking yet manageable fish.
Size and Appearance
Adult Flagtail Porthole Catfish typically reach a size of 4 to 5 inches (10 to 13 cm) in length. Their elongated bodies are marked with a series of circular, porthole-like spots along the sides, complemented by a striking flag-like pattern on their tail fin. This unique coloration makes them a standout centerpiece in community tanks.
Temperament and Behavior
Generally peaceful and shy, the Flagtail Porthole Catfish prefers to stay in the lower regions of the tank. It is not aggressive and does not pose a threat to other fish, making it ideal for community tanks with compatible species.
| Feature | Detail |
|---|---|
| Size | 4 to 5 inches (10 to 13 cm) |
| Color Pattern | Circular porthole spots and flag-like tail pattern |
| Temperament | Peaceful, shy, non-aggressive |
| Water Conditions | Temperature: 72–78°F (22–26°C), pH: 6.5–7.5 |
FAQ
What is the typical size of a Flagtail Porthole Catfish?
Adult Flagtail Porthole Catfish typically grow to 4 to 5 inches (10 to 13 cm) in length.
Is the Flagtail Porthole Catfish suitable for a community tank?
Yes, it is peaceful and non-aggressive, making it a good fit for community tanks with compatible species.
What are the ideal water conditions for this fish?
It thrives in water with a temperature between 72–78°F (22–26°C) and a pH level between 6.5 and 7.5.

Emily Alsop –
I added a Flagtail Porthole Catfish to my 20-gallon tank and it has been a hit. The fish is calm and stays near the bottom. Its tail pattern is very eye-catching and it blends well with other fish. Easy to care for and doesn’t stress the tank mates.
Andrew Clark –
The fish arrived healthy and looks exactly as described. It’s not very active but its appearance is unique. I keep it in a planted tank with tetras and it seems to coexist peacefully.
Austin Smith –
Great addition to my aquarium. The porthole spots stand out and the fish doesn’t chase or bother others. I’ve had it for three months and it’s still active and healthy.