Yellow Catfish
Hemibagrus nemurus
A river giant that grows enormous, acts aggressively, and fears nothing. Including you.

About
The Yellow Catfish (Hemibagrus nemurus) is a large Southeast Asian bagrid catfish native to major river systems including the Mekong, Chao Phraya, and Xe Bangfai basins, as well as the Malay Peninsula and the islands of Sumatra, Java, and Borneo. In the wild it gravitates toward expansive, slow-moving rivers with soft, muddy substrates, and during seasonal floods it moves into inundated forest areas to spawn. It's a committed carnivore, taking insects, aquatic larvae, shrimps, crustaceans, and fish. In the aquarium this species is a serious commitment. It grows to well over a foot and a half, lives upwards of a decade, and carries an aggressive, territorial temperament that makes it incompatible with virtually any tankmate outside of the most extraordinary setups. One particularly notable trait is its apparent indifference to human presence, which means routine tank maintenance carries a real risk of being on the receiving end of an attack. This is emphatically not a community fish, and it should be kept as a solitary specimen. The enormous water volume required, combined with its aggression and long lifespan, puts it firmly outside the realm of practical home aquarium keeping for almost anyone. It does appear in the ornamental trade with some regularity, but that availability should not be mistaken for suitability.
Similar species
Other fish you might consider
Good tank mates
Species that tend to coexist peacefully with Yellow Catfish
From the same region
Share the same natural habitat. Great for a biotope-themed tank
Frequently asked questions
- How big does the Yellow Catfish get?
- The Yellow Catfish reaches about 15.5–26" as an adult.
- What size tank does the Yellow Catfish need?
- A minimum of 450 gallons is recommended for the Yellow Catfish.
- What water parameters does the Yellow Catfish need?
- The Yellow Catfish does best with a temperature of 68–82°F, a pH of 6–8.2, hardness around 2–25 dGH.
- Is the Yellow Catfish aggressive?
- The Yellow Catfish is aggressive and is best kept alone or with robust tankmates that can hold their own.
- What does the Yellow Catfish eat?
- The Yellow Catfish is a carnivore. It needs a meaty, protein-rich diet of frozen or live foods.
- How long does the Yellow Catfish live?
- With good care, the Yellow Catfish typically lives 8-12 years.