Hatching Your Own Brine Shrimp at Home to Feed Fry and Fish
Freshly hatched brine shrimp nauplii rank among the best live foods for starting fry off or triggering breeding in adults, thanks to their tiny size and their richness in essential fatty acids. A review by Sorgeloos, Dhert and Candreva, published in 2001 in the journal Aquaculture, documented the central role of Artemia in marine fish larviculture and detailed the hatching conditions that maximise the rate of viable nauplii (study on Google Scholar). Our food section gathers all our pointers on live and dry foods.
What you need for a first hatchery
An upturned plastic bottle or a dedicated conical hatchery, an air pump to keep the eggs in constant suspension, salt water at around 30-35 g/L and a temperature of 25 to 28 °C are enough to get started. Dehydrated eggs keep for years in the freezer before use, a practical edge over other, more perishable live and frozen foods.
What a successful hatch looks like
Allow twenty-four to thirty-six hours under continuous bubbling and constant light to hatch the majority of viable eggs. Once the orange nauplii are clearly visible at the bottom of the hatchery after the air pump is switched off, a simple siphon lets you collect them separately from the empty shells, which float on the surface and should never be fed to fry.
How should nauplii be fed to fry?
Briefly rinsed in fresh water to remove salt before feeding in a freshwater tank, nauplii should be offered in small amounts several times a day rather than in one portion, a principle in line with our advice on feeding fish fry their first meals. Uneaten excess quickly fouls the water of a small breeding tank.
- 25-28 °C and 30-35 g/L salt water: optimal hatching conditions.
- 24 to 36 hours under continuous bubbling and light.
- Discard the empty shells: never feed them to fry.
- Small, frequent portions rather than one large meal.
Frequently asked questions
Can freshwater fish be fed brine shrimp?
Yes, after a brief rinse in fresh water to remove residual salt that could upset a small breeding tank.
How long do brine shrimp eggs keep?
Several years in the freezer in an airtight container, away from moisture, which sharply reduces their hatch rate.
Do you need a professional hatchery to get started?
No, a simple pierced plastic bottle and an air pump are plenty for occasional hobbyist use.
This guide is part of Planète Pets’s Fishkeeping universe. Our advice is general in nature: for any health concern, your veterinarian remains the only reference.