How to Identify the Banded Water Cobra (Identification Guide)
The banded water cobra is a large, semi-aquatic African cobra recognized by its bold black-and-yellow banding and strong association with rivers and lakes.
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Key identifying features
The banded water cobra (Naja annulata) is a large, semi-aquatic cobra of Central African waterways, distinguished by bold alternating dark and light bands running the length of the body, unlike the more uniformly colored terrestrial cobras. It is highly adapted to an aquatic lifestyle, swimming well and often found in or near water.
Coloration & pattern
The body shows striking alternating bands of dark brown or black and yellowish, cream, or olive, giving it a strongly banded, almost strikingly patterned appearance distinct from most other cobra species. Band width and contrast can vary between individuals and populations, but the banded pattern itself is a reliable and distinctive field mark.
Head, eyes & scales
The head is moderately broad and only slightly distinct from the neck, with large smooth scales. Eyes are round-pupiled and moderately sized. The hood, when spread, is narrower than in many terrestrial cobra species, consistent with this species' more elongated, swimming-adapted build.
Size & body shape
Adults can reach substantial lengths, commonly 1.8–2.2 m and occasionally longer, with a relatively elongated, laterally compressed body well suited to swimming, and a moderately long tail.
Range & habitat where you'll see it
The banded water cobra is found in Central Africa, particularly the Congo River basin and Lake Tanganyika region, in rivers, lakes, and swamps. It is a strong swimmer and feeds primarily on fish, often seen partially submerged or basking near the water's edge.
How to tell it apart from look-alikes
The bold banded pattern readily distinguishes this species from most other African cobras, which tend to be more uniformly colored. Its strong association with aquatic habitats, elongated body, and swimming behavior further separate it from terrestrial cobra species. The similar but distinct Congo water cobra shares aquatic habits but generally differs in banding pattern and range within the broader Congo basin system.
Frequently asked questions
What does a banded water cobra look like?
It has a striking body pattern of alternating dark brown or black and yellowish or cream bands running the length of the body, distinct from most solid-colored cobras.
How big does the banded water cobra get?
Adults commonly reach 1.8–2.2 m, occasionally longer, with an elongated body adapted for swimming.
Where does the banded water cobra live?
It inhabits rivers, lakes, and swamps in Central Africa, particularly the Congo River basin and Lake Tanganyika region.
Is the banded water cobra aquatic?
Yes, it is strongly semi-aquatic, a capable swimmer, and feeds primarily on fish, often found in or near water.