Products
CryoPlankton is available in multiple sizes, designed for different larval stages and hatchery setups. If you are unsure which product is relevant to your species or protocol, the right starting point is a discussion with our team.
Cryo-L is a cryopreserved live feed produced from Semibalanus balanoides nauplii, ~340µm length and ~150µm width.
456 g/kg protein (dry weight). DHA 20% / EPA 27% of total fatty acids, bound in phospholipids.
First feeding for species with mouth gapes large enough to ingest 340 µm prey, or as a smooth transition step following Cryo-S. It supports larvae through to dry weaning.
Cryo-L is the natural starting point for hatcheries looking to reduce dependence on traditional systems and improve the consistency of early-stage growth performance. It simplifies hatchery production, reducing risk and strengthening biosecurity, while improving fry quality, accelerating growth rates, and lowering FCR throughout the on-growing phase.
Cryo-S is a smaller-format live feed, produced from Balanus crenatus nauplii, ~200µm length and ~100µm width.
454 g/kg protein (dry weight). DHA 11% / EPA 28% of total fatty acids, with ~80% of total lipid bound as phospholipids.
For larvae with mouth gapes that are too small at first feed to process a 340µm organism. It bridges the critical early feeding window until larvae transition to larger prey.
Transitions hatcheries safely away from traditional live feed at the stage where variation causes the highest mortality.
Cryo-Micro is CryoPlankton's smallest format, produced from Mytilus edulis (blue mussel eggs), ~70 µm.
500g/kg protein, EPA 19%/DHA 12%/ARA 0.7%, and polar lipids 84% of total fatty acids.
Tailored for the earliest developmental feeding phases.
Accelerates initial growth rates and shortens the time required to transition larvae to subsequent live prey stages.
Shares Cryo-L's source organism and dimensions: ~340µm length, ~150µm width.
456 g/kg protein (Dry weight), DHA 20% / EPA 27% of total fatty acids, bound in phospholipids.
First feeding to weaning, delivered in a stable, inert frozen format.
For hatcheries wanting CryoPlankton's nutritional profile without dewar logistics. Stores in a standard −20°C freezer, making it easier to hold stock on-site without liquid nitrogen infrastructure.
Order the desired amount of nauplii from Planktonic. We ship the product in secure dewars directly to your facility, timed precisely to your first-feeding windows.
Three steps: thaw, rinse, and revitalise. The nauplii are transferred from the dewar, thawed in seawater, rinsed, and held briefly in aerated water. For large industrial volumes, an automatic rinsing unit is available to combine steps and minimise handling time.
After revitalisation, the nauplii resume natural swimming activity, remain biologically intact, highly vital, and immediately ready for feeding.
Once the feeding protocol is established, upstream cultivation labour is removed, and downstream outcomes show measurable consistency.
The advantage
Where biology meets precision
Technical Details
Thawing
Place the required quantity in seawater and allow to thaw with continuous stirring.
Rinsing
Rinse from the outside under clean seawater.
Revitalise
Off-the-shelf and ready when you need it. CryoPlankton is held in a liquid-nitrogen dewar and keeps effectively indefinitely, with no live culture to maintain. i-Cryo can also be stored in a standard −20°C freezer for up to three months, for hatcheries without dewar infrastructure.
CryoPlankton arrives as pre-portioned doses, frozen in 12 g pellets in an easy-to-ship cryogenic dewar. Each dewar contains 80 kg CryoPlankton, approximately 4 bill nauplii of CryoPlankton Large or 8 bill nauplii of CryoPlankton Small. i-Cryo is frozen into small spheres and stored in liquid nitrogen until shipped. It's packed in Styrofoam boxes with dry and wet ice to maintain the cold chain, and can also ship in liquid nitrogen alongside other cryopreserved products. Each unit contains a mix of approximately 65% nauplii and 35% seawater, around 65 million nauplii per kg.
The cryo protectant can be irritable for skin and eyes if there is direct contact with the product, and toxic if swallowed. Gloves and protective glasses should be used when handling the product. The protectant is diluted and the risk of irritation is considered low. However, flush eyes/skin for 15 minutes if the product is in direct contact with eyes/skin. The cryo protectant is degraded rapidly and can be washed in the drain.
Still have questions?
The right starting point is a discussion about your species, your operational priorities, and what you are trying to improve in production outcomes.
