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An ornate bichir ( Polypterus ornatipinnis ) in the Bronx Zoo, September 2016

Ornate bichir

Large air-breathing fish from Lake Tanganyika and the Congo basin.

Photo: MusikAnimal, CC BY-SA 4.0, via Wikimedia Commons

The ornate bichir is a primitive bony fish native to Central and East Africa. It inhabits Lake Tanganyika and the Congo River system, growing up to 60 cm. Its ability to breathe air allows survival in low-oxygen water, making it popular in aquariums.

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  • Grows up to 60 cm in length
  • Breathes air using primitive lungs
  • Found in Lake Tanganyika and Congo basin
  • Features black and yellow patterning
  • Popular in the aquarium trade

What it is

The ornate bichir is a member of the Polypteridae family, known for its ancient lineage. It displays striking black and yellow patterns across its body, head, and fins. Adults typically reach lengths of 60 cm, making them the largest among bichirs with a clearly protruding upper jaw. The body colour varies from dark brown to brownish grey. This species possesses nine to eleven dorsal spines along its back. Its eyes are positioned on the sides of the head, and it has two prominent pectoral fins. These physical traits contribute to its reputation as one of the most visually appealing bichirs available.

Where it lives

This fish is native to the freshwater systems of Central and East Africa. Its distribution includes the vast Congo River basin and Lake Tanganyika. Specific records place it within the waters of the Democratic Republic of the Congo, the Central African Republic, and Tanzania. It thrives in these tropical inland waters, which provide the warm environment it requires. The species is well adapted to the specific conditions found in these large riverine and lacustrine habitats.

How it lives

A key feature of this species is its primitive pair of lungs. This adaptation allows it to breathe atmospheric air directly. Consequently, it can survive in hypoxic waters where oxygen levels are critically low. It can even endure periods out of water, provided it remains moist. This respiratory flexibility gives it a significant advantage in stagnant or poorly oxygenated environments. While specific dietary habits are not detailed here, its physical structure suggests a predatory lifestyle typical of bichirs.

Ornate bichir
A drawing made by EveryFish from what this page says. It is a diagram, not a picture of the real fish.

Fish and people

The ornate bichir is very common in the global aquarium trade. Hobbyists value it for its attractive colouration and unique primitive appearance. Its ability to survive in various water conditions makes it a resilient choice for experienced keepers. Unlike some food fish, its primary interaction with humans is through the ornamental pet industry. It is appreciated for its distinctive look and interesting behaviour in captivity.

Polypterus ornatipinnis
Polypterus ornatipinnis. Photo: Logan McGuire-Warden, CC BY 3.0, via Wikimedia Commons
At the Vancouver Aquarium
At the Vancouver Aquarium. Photo: Bloopityboop, CC BY-SA 4.0, via Wikimedia Commons
Polypterus ornatipinnis ORNATE BICHIR. Wilhelma Zoological-Botanical Garden Stuttgart.
Polypterus ornatipinnis ORNATE BICHIR. Wilhelma Zoological-Botanical Garden Stuttgart.. Photo: NasserHalaweh, CC BY-SA 4.0, via Wikimedia Commons

Questions people ask about Ornate bichir

Can the ornate bichir breathe air?

Yes, it has a primitive pair of lungs that allow it to breathe atmospheric air. This helps it survive in low-oxygen water and even out of water for short times.

How large does the ornate bichir get?

It can reach a maximum length of 60 cm, which is about 24 inches. It is the largest species among the upper jaw bichirs.

Where is the ornate bichir found in the wild?

It is native to Central and East Africa, specifically in Lake Tanganyika and the Congo River basin. Countries include Tanzania, DRC, and CAR.

Good reading and sources

Where this page comes from

The facts on this page come from the Wikipedia article "Polypterus ornatipinnis", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). EveryFish rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.

It may contain mistakes, and figures change over time. Nothing here is investment or buying advice. If something is wrong, tell us. Last refreshed 2026-11-15.

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Photo credits on this page

The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.

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