Flagtail Catfish
Dianema urostriatum
Water Parameters
About
Elegant callichthyid catfish with a black‑and‑white striped tail (flag = flag). A relative of Corydoras but larger and more active in the water column. Social and diurnal, it is one of the most conspicuous catfish in the aquarium.
Behavior & Temperament
Peaceful, gregarious calico catfish. Swims actively in groups in the mid‑water and at the bottom. Less shy than many catfish, often visible during the day.
Feeding
Omnivore - sinking pellets, brine shrimp, bloodworms, daphnia, wafers. Actively scavenges substrate.
Breeding
Bubble nest builder at the surface (unusual behavior for catfish). Male tends the nest. Breeding possible in captivity.
Care Notes
Recommended group of 4+. Sand substrate. Well‑planted aquarium. Moderate current. Highly adaptable to various conditions.
Compatibility
Very peaceful. Great for community setups. Ideal with tetras, rasboras, corydoras, dwarf cichlids and other peaceful fish.
Quick Summary
| Scientific Name | Dianema urostriatum |
|---|---|
| Family | Callichthyidae |
| Category | Fish |
| Care Level | Beginner |
| Water Type | Freshwater |
| Max Size | 12.0 cm (4.7") |
| Min Tank | 150 L (40 gal) |
| Min Group | 4+ |
| Diet | Omnivore - sinking pellets, brine shrimp, bloodworms, daphnia, wafers. Actively scavenges substrate. |
| Temperament | Peaceful, gregarious calico catfish. Swims actively in groups in the mid‑water and at the bottom. Less shy than many catfish, often visible during the day. |
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