FishTankHelper

Ember tetra care: tank size, temperature and tankmates

By Andy · Updated November 2, 2026 · Fish profile

A tiny orange tetra that glows in a planted nano tank. Embers are peaceful and stay under an inch, which makes them one of the best schooling fish for 10 gallon tanks.

0.8 in
Adult size
10 gal
Smallest tank
73–82°F
Temperature
6+
Group size

Quick facts

TypeTetra
Adult sizeAbout 0.8 inches
Smallest tank10 gallons
Temperature73–82°F
Keep6 or more
Watch forPeaceful. Keep the right group size.

How to keep them

Use crushed flakes and micro pellets. Adult cherry shrimp are safe with them, but they will pick off some baby shrimp.

Like every fish, they need a cycled tank, a heater set inside their range, and a weekly water change of about 25%. Test for ammonia, nitrite and nitrate before you add them. New to this? Start with how to cycle a fish tank.

Tankmates

Good tankmates

Neon tetra · Cardinal tetra · Rummynose tetra · Black skirt tetra · Serpae tetra · Harlequin rasbora · Zebra danio · Cherry barb · Tiger barb · Platy · Guppy · Endler's livebearer · Molly · Swordtail · Betta (male) · Honey gourami · Dwarf gourami · Pearl gourami · Corydoras (bronze or peppered) · Pygmy corydoras · Kuhli loach · Otocinclus · Bristlenose pleco · Cherry shrimp · Amano shrimp · Nerite snail · Mystery snail

Avoid

Check a whole tank in the fish compatibility checker, or see if they fit with the stocking calculator.

More fish: All fish profiles · Fish care sheets · Fish finder