Description
Tank Size. Though diminutive in size, ember tetras are a shoaling species. They don't tend to form tight schools but group loosely and thus need ample space to swim. They can be kept in nano tanks as small as 5 gallons, but frequent water changes will be required to maintain high water quality.
Ember tetras should be kept in acidic water with a pH near 6.6, and although their native habitat has very soft water they have adapted quite well to a wide range of hardness (5–17 dGH). The recommended temperature range is between 23–29 °C (73–84 °F).