Emperor Tetra
Nematobrycon palmeri

Care Level




Reef Compatible


Plant Safe


Max Size

Less than 2"

Minimum Tank Size

20 gallon


Black, Blue, Silver



Water Conditions

Slightly acidic (6.2-7.5 pH), Intermediate Water Hardness (3-12 dKH), 72 to 78 degrees Fahrenheit


General: The Emperor Tetra (Nematobrycon palmeri) are an endemic fish species naturally occupying the slower moving tributaries of Columbia. The Emperor Tetra are a schooling fish, that will typically display a more active behavior when in schools of four, or more, per ten gallons of water. The Emperor Tetra are a relatively hardy, simple to care for fish.

Fecundity: The Emperor Tetra (Nematobrycon palmeri) female will typically produce a couple hundred eggs per clutch. In order to encourage reproductive behavior, provide a healthy diet containing large amounts of protein.

Aquarium Diet (Omnivore): Baby Brine Shrimp, Brine Shrimp, Blackworms, Daphnia, Spirulina, Insects, and Tropical Flake.

Preferred Water Chemistry: Slightly acidic (6.2-7.5 pH), Intermediate Water Hardness (3-12 dKH)

Dimorphism: As the Emperor Tetra (Nematobrycon palmeri) mature, the males will develop a blue tint along the lateral line. The male will also develop an extension towards the interior portion of the caudal fin.

Compatibility: The Emperor Tetra (Nematobrycon palmeri) are typically compatible with Hillstream Loach, Kuhli Loach, Dojo Loach, Rasbora, Corydoras, Chocolate Gourami, Scarlet Badis, Honey Gourami, Danio, and other small species of Tetra.

Emperor Tetra Photo Gallery

Emperor Tetra Videos