Ember Tetra Feeding: Diet, Food Size, and How Often to Feed
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An ember tetra grows to about 0.8 inch (2 cm), and its mouth is built to match. Everything about feeding one follows from that: the food has to be tiny, it has to sink slowly enough to be caught, and each portion has to be small enough for the school to clear.
What Embers Eat in the Wild
In the backwaters and oxbow lakes of Brazil's Araguaia River basin, the ember tetra is thought to be a micropredator, picking tiny invertebrates and other zooplankton out of the water. The captive diet below is built to fit that: small food, with live or frozen prey on the menu every day.
The Staple Diet
Build the daily diet on a quality dried food sized for very small fish. A slow-sinking micro-pellet works, and so do flake and granules once they are crushed down to a fine crumb. Around that staple go small live and frozen foods: baby brine shrimp (Artemia nauplii), daphnia, cyclops and moina.
Embers have little mouths and feed best on tiny, slow-sinking food. Choose the smallest micro-pellet grade, crush flake fine, and keep live and frozen foods at the size of baby brine shrimp and daphnia.
Live and Frozen Foods
For this species, live and frozen foods belong in the regular routine: small live or frozen fare every day, alongside the dried staple. Baby brine shrimp and daphnia are small enough for an ember to swallow whole, and they are the closest match a keeper can buy to the zooplankton a wild ember probably hunts.
The genus name Hyphessobrycon joins Greek words for "a little smaller" and "to bite" or "eat greedily". The scientist who named the genus never explained the "smaller", which probably refers to the size of the fish.
How Often to Feed, and How Much
Feed adults once or twice a day. Where the routine allows two meals, make one of them live or frozen food.
The portion matters more than the count. Each meal is a small pinch sized to the school, and the way to judge it is to watch the fish eat. If food drifts past them and settles on the substrate untouched, the next pinch is smaller. Food that sits uneaten breaks down into ammonia, the same waste the nitrogen cycle in a mature tank has to clear.
Watching also tells you whether the embers are getting fed at all. An ember loses out at feeding time to anything rowdy or much bigger than itself, so in a mixed tank the faster fish can take most of a meal while the embers hang back. Choosing companions that pass the checks two species need before sharing a tank, similar size and a calm temperament above all, is what keeps feeding time fair.
Feeding Fry
Embers scatter their eggs and give no parental care, and adults will eat both eggs and newly hatched fry. Fry raised in a separate tank start on Paramecium or a dry fry food of 5 to 50 micron grade.
A fish this small lives on what fits in its mouth, and the keeper who sizes every food to that mouth has most of ember tetra feeding solved. The ember tetra encyclopedia profile has the natural history.
Sources & Further Reading
Frequently Asked Questions
What do ember tetras eat?
Micro-pellets or flake crushed fine as the staple, plus small live or frozen foods such as baby brine shrimp, daphnia, cyclops and moina. Wild ember tetras are probably micropredators of tiny invertebrates and zooplankton, and at about 0.8 inch (2 cm) long they need tiny, slow-sinking food.
How often should I feed ember tetras?
Once or twice a day, a small pinch each time that the school finishes before it settles on the substrate. Small live or frozen food can be one of those meals every day.
How small should ember tetra food be?
Very small. An adult ember tetra is about 0.8 inch (2 cm) long with a little mouth, so use the smallest micro-pellet grade, flake crushed fine, and live foods the size of baby brine shrimp or daphnia. Slow-sinking food gives the fish time to catch it.
What do you feed ember tetra fry?
Paramecium or a dry fry food of 5 to 50 micron grade as the first food. Ember tetras scatter their eggs and give no parental care, and adults will eat their own eggs and fry, so fry are raised apart from the adults.
Do ember tetras need live food?
Daily small live or frozen food is part of the diet for this species, alongside the dried staple. Baby brine shrimp and daphnia are the right size.
More on the Ember Tetra
Ember Tetra care guide
🐠 How Much Does Ember Tetra Ownership Cost?
🐠 Ember Tetras Are Never Handled, So the Trip Home Is the Part to Get Right
🐠 Common Ember Tetra Health Issues (and Why the Ich Heat Cure Stops at 82°F)
🐠 Ember Tetra Tank Setup: A 10-Gallon School, Soft Water, and Dense Plants
🐠 Ember Tetra Enrichment: Bright Orange, Built to Vanish
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Written by Michael Ryan
Mike keeps two rescued bearded dragons, Dex and Cera, and writes the care guides on BeastlyFacts from his own research and mistakes. He is not a veterinarian.
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