Size grade
2-3 mm
Pack size
100 g blister
Water type
Marine
Delivery
Cold chain — keep frozen
Colour & specimen: This fish's colouration may look different in your own tank depending on your lighting, diet, stress levels and water conditions, and can vary between individual fish of the same species. You will not receive this exact fish pictured; the one you receive will be a similar size, colour and condition.
WA & TAS orders: state biosecurity regulations restrict which live animals can be sent to Western Australia and Tasmania — please check what we can send to you before ordering. See delivery info
Ocean Nutrition frozen red plankton
Tiny frozen copepods that support colour in corals and small fish. Ocean Nutrition red plankton is whole frozen Calanus finmarchicus — a natural North Atlantic copepod around 2–3 mm — rich in astaxanthin and omega-3 fatty acids. It suits reef tanks and marine fish that take small particulate foods, including corals and other filter-feeding invertebrates.
Key features
- Single ingredient — whole Calanus finmarchicus copepods, nothing else added.
- Natural colour support — high in natural carotenoid pigments and astaxanthin, which support colour development in marine fish and corals over time.
- Omega-3 rich — a natural source of highly unsaturated fatty acids.
- Small particle size — 2–3 mm, sized for corals, small fish and filter feeders rather than large predators.
- 100 g blister pack — pre-portioned for easy dosing.
Ingredients
Reproduced verbatim from the manufacturer: Red plankton (Calanus finmarchicus).
Guaranteed analysis
| Constituent | Level |
|---|---|
| Crude protein | 7.4% |
| Crude fat | 2.8% |
| Ash | 2.5% |
| Moisture | 85.5% |
Crude fibre is not published by the manufacturer for this product.
Specifications
| Form | Frozen, whole copepods |
|---|---|
| Particle size | 2–3 mm |
| Pack size | 100 g blister |
| Country of manufacture | Belgium |
| Storage | Keep frozen at -18°C or below until use |
Suitable for, and not suitable for
Suitable for: marine fish, corals and other invertebrates that take small particulate foods, including many filter feeders.
Not suitable for: freshwater setups looking for a staple diet, or large predatory fish for which this particle size is too small to be a primary food source.
Thawing and feeding
How do I thaw it?
Thaw a portion in a small amount of tank or aquarium water, then feed the thawed food and liquid together. Never refreeze thawed food.
How often should I feed it?
Feed two to five times a day, offering only what your fish and corals will consume within five minutes.
Storage and cold chain
This is a frozen product. Transfer it to your freezer immediately on arrival and keep it at -18°C or below. Contact us before ordering if you need certainty on delivery timing for frozen items — local pickup keeps the cold chain most reliable.
Goes well with
Rotate with our other Ocean Nutrition frozen lines — mysis, squid and rotifers — for broader dietary variety across your fish and coral feeding.
Warranty and delivery
As a perishable frozen food, this isn't covered by a manufacturer warranty the way equipment is; your rights under Australian Consumer Law still apply if a pack arrives damaged or not as described. See the storage and cold chain note above for delivery handling.
Common questions
Will my corals eat red plankton?
Many corals and other filter feeders take red plankton readily, particularly when it's target-fed close to the polyps after thawing.
Is red plankton a complete diet on its own?
No — it's best used as one part of a varied frozen feeding rotation alongside other foods such as mysis or squid.
Why does it help with colour?
The natural carotenoid pigments and astaxanthin in red plankton are precursors fish and corals use to develop and maintain colour.
Can I feed it to freshwater fish?
It's formulated and marketed as a marine food; Ocean Nutrition doesn't publish freshwater feeding guidance for this product.




