Roti-Shot Live Rotifers UK: Brachionus plicatilis, Concentrated and Ready to Use
You have a spawn happening and you need live rotifers today, not after you have set up a culture vessel, sourced a starter culture and waited for it to establish. Or you keep seahorses and want to add live prey a few times a week without the commitment of running a full culture. The moment is now, not after the setup.
Live rotifer cultures take time, space and regular attention to maintain. For keepers who want the benefit of live rotifers without the infrastructure of a home culture, or who need a reliable on-demand addition to complement an existing system, there was no practical solution until now.
Roti-Shot is a concentrated ready-to-use live rotifer pouch in 50ml and 100ml formats, containing Brachionus plicatilis L-strain at 90 to 360 microns and 200 to 300 rotifers per millilitre. Protein content of 50 to 65%. Cultured at 1.019 specific gravity and enriched with phospholipids before dispatch to maximise nutritional density on arrival. Snip the pouch and add directly to your breeding vessel, seahorse tank, coral feeding chamber or reef display. No equipment, no preparation, no setup time.
Your larvae begin feeding within minutes. Your seahorses have live moving prey on demand. Your corals and filter feeders receive a concentrated pulse of exactly the small-particle live nutrition they evolved to intercept.
Reefphyto has been culturing live marine foods from our specialist facility in Wales since 2008. Roti-Shot is prepared fresh to the same standard as every culture we dispatch, 18+ years of live food production in every pouch. Darren is available personally if you have questions about dosing for your specific species or setup.
If you need a quick rotifer top-up for breeding or small filter feeders without committing to a full culture, a Roti-Shot is the right decision.
What Is Roti-Shot and How Is It Different from Live Rotifers?
Roti-Shot is Reefphyto's concentrated ready-to-use live rotifer format. It contains the same species, Brachionus plicatilis L-strain, cultured under the same aquaculture conditions at our Welsh facility and enriched to the same nutritional standard as our full-volume Live Rotifers range. The difference is entirely in format and purpose.
Live Rotifers in 100ml to 2500ml volumes are designed for breeders establishing larval rearing systems, keepers running home rotifer cultures, and those who need volume. Roti-Shot in 50ml and 100ml is designed for keepers who need live rotifers now, in a small and ready-to-use format, without any preparation, equipment or commitment to ongoing culture management.
The two products serve different customer moments. Roti-Shot is the on-demand addition, for the spawn that was not planned for, the seahorse tank that needs feeding today, the coral feeding session where live prey makes the difference, the breeder who wants to supplement an established culture with a fresh concentrated addition. If you need live rotifers regularly at volume, Live Rotifers is the right product. If you need them now, conveniently and reliably, Roti-Shot is the answer.
The Nutritional Profile of Roti-Shot Live Rotifers
Species and Size
Roti-Shot contains Brachionus plicatilis, L-strain. The L-strain designation refers to the larger of the two commonly cultured rotifer strains, with individual rotifers measuring 90 to 360 microns across the full size distribution of a healthy culture, from freshly hatched juveniles up to gravid adults carrying eggs. This size range makes them suitable for a broad range of applications, large enough to carry meaningful nutritional content, small enough to be captured by newly hatched marine fish larvae, juvenile seahorses, coral polyps and a wide range of filter-feeding invertebrates.
Protein and Enrichment
Protein content is 50 to 65%, reflecting the high nutritional density of a phytoplankton-fed, enriched rotifer culture. Every batch of Roti-Shot is enriched with phospholipids before dispatch, a step that significantly increases the fatty acid content of the rotifers and ensures the nutritional value at point of use reflects a genuinely prepared live food rather than a basic culture addition.
Salinity
Roti-Shot is cultured at 1.019 specific gravity, within the standard range for marine aquarium use and compatible with reef tanks, marine breeding setups, and seahorse systems maintained at normal marine salinity.
What Can You Use Roti-Shot For?
Marine Fish Larvae and Breeding
The most critical use case for Roti-Shot is larval feeding in marine fish breeding. Newly hatched clownfish fry, dottyback larvae, goby fry and the larvae of most reef fish species require live moving prey within the first 24 to 48 hours after hatching. The window is short and unforgiving. Without adequate live food at the right particle size from the earliest days, starvation sets in silently and losses mount.
Roti-Shot delivers 10,000 to 30,000 live, enriched Brachionus plicatilis directly into the rearing vessel within seconds of receiving your order. For breeders who do not run permanent rotifer cultures, or whose culture has crashed at the wrong moment, Roti-Shot provides a reliable emergency supply. For breeders who do maintain cultures, a Roti-Shot addition provides a fresh population boost and introduces enriched rotifers at peak nutritional density precisely when larvae need them most.
Seahorses and Pipefish
Juvenile seahorses and pipefish present one of the most demanding feeding challenges in the reef hobby. Their small size, high metabolism and instinct to pursue live moving prey make the early weeks of their lives precarious without a reliable live food source. Roti-Shot provides an immediate, on-demand supply of live rotifers sized appropriately for juveniles, without the need to maintain a permanent culture between feeding sessions.
For adult seahorses and pipefish, Roti-Shot complements a copepod-based diet by providing additional live prey at a smaller particle size, contributing to feeding variety and ensuring animals that have not yet established feeding on larger prey have something they can actively pursue and consume.
Coral Feeding and Filter Feeders
Live rotifers in the water column trigger a feeding response in corals, feather duster worms, tube worms, bivalves and a wide range of filter-feeding invertebrates that frozen or dried alternatives do not reliably produce. Their slow, rotating swimming motion and small particle size make them accessible to coral polyps across a broad range of species, including delicate SPS corals that benefit from regular small-particle planktonic feeding.
Adding a Roti-Shot pouch to a reef tank or coral feeding chamber after lights-out, with flow reduced and skimmer off for 30 to 60 minutes, provides a concentrated planktonic pulse that mimics the natural evening bloom of zooplankton on a wild reef. The improvement in polyp extension and feeding response is often visible within minutes.
Supplementing a Home Rotifer Culture
Keepers who run their own Brachionus plicatilis cultures will recognise the situations where a culture crashes, density drops unexpectedly, or a large demand arises before the culture has recovered. Roti-Shot provides a fresh, dense, enriched addition that can restart a depleted culture or supplement it during a high-demand period, particularly useful during an active breeding project where culture volume and quality matter simultaneously.
How to Use Roti-Shot
Turn off mechanical filtration, protein skimmer and powerheads for 30 minutes before adding Roti-Shot to give the rotifers time to distribute and be encountered by target animals before being removed by filtration. For larval rearing, add the pouch contents directly to the rearing vessel with gentle aeration running to maintain oxygen and distribute food evenly. For reef tanks and coral feeding, add to the display tank or sump after lights out in a low-flow area.
The 50ml pouch is designed for single-use addition to a rearing vessel of up to 30 litres, or as a supplementary dose to a larger reef system. The 100ml pouch suits larger rearing vessels, higher-demand breeding setups, or keepers who want to dose a full reef display and sump simultaneously.
If you have any rotifers remaining after use, they can be stored in the fridge for up to 48 hours with the lid slightly open for gas exchange. For best results, use within 24 hours of delivery.
Roti-Shot vs Live Rotifers: Which Do You Need?
Roti-Shot is the right choice if you need live rotifers on demand without managing a culture, if you have an occasional breeding project rather than a continuous one, if you want a reliable emergency supply for when a culture fails, or if you want to supplement an existing culture with enriched rotifers at peak density.
Live Rotifers in larger volumes are the right choice if you breed marine fish regularly and need volume, if you are establishing or maintaining a home rotifer culture and need a starter or top-up culture, or if your system has a high continuous demand for live rotifers from seahorses or filter feeders that a small pouch cannot adequately supply.
Many serious breeders use both. Roti-Shot for the first critical days of a new spawn when fresh enriched rotifers are most important, and Live Rotifers in larger volumes to maintain culture volume through the rearing period.
Frequently Asked Questions About Roti-Shot
How many rotifers are in a Roti-Shot pouch?
At a density of 200 to 300 rotifers per millilitre, a 50ml pouch contains approximately 10,000 to 15,000 live rotifers and a 100ml pouch contains approximately 20,000 to 30,000. This is sufficient to raise the rotifer density in a 20 to 30 litre rearing vessel to a useful first-feed level for marine fish larvae.
Are the rotifers enriched?
Yes. Every batch of Roti-Shot is enriched with phospholipids before dispatch. This increases the fatty acid content of the rotifers and ensures they carry meaningful nutritional value at the point your larvae or corals consume them, rather than being nutritionally depleted basic culture animals.
Can I use Roti-Shot directly in a reef tank with fish?
Yes. Rotifers are a natural component of the marine food web and are entirely safe to add to a healthy reef system. Turn off the skimmer and reduce flow for 30 to 60 minutes after adding to allow corals and filter feeders time to feed before the rotifers are exported. Fish will also consume rotifers, which is not harmful and provides additional nutritional diversity.
Is Roti-Shot suitable for clownfish breeding?
Yes. Brachionus plicatilis L-strain at 90 to 360 microns is the standard first-feed rotifer used in clownfish larval rearing worldwide. Roti-Shot provides a fresh, enriched supply suitable for the first 10 to 14 days of larval development before the transition to Artemia nauplii. Darren is happy to advise on rotifer densities and feeding schedules for clownfish larvae specifically.
What is the difference between Roti-Shot and the rotifer culture kit?
Roti-Shot is a ready-to-use live rotifer addition requiring no equipment or preparation. The Rotifer Culture Kit provides everything needed to establish and maintain a permanent home rotifer culture, including a starter culture, culture vessel, feed and instructions. If you breed fish regularly and need a continuous rotifer supply, the culture kit is the more economical long-term solution. If you need live rotifers occasionally or as a supplement, Roti-Shot is the more practical choice.
Complete Your Live Food System
Roti-Shot pairs naturally with other Reefphyto live food products. For breeders, Artemia hatching eggs and the rotifer enrichment provide the next stages of a complete larval feeding programme beyond the first rotifer phase. For reef keepers, Reef Flourish Super Concentrate phytoplankton and Zoo-Shot live zooplankton complement the small-particle rotifer addition with phytoplankton and larger zooplankton to complete the food web. For seahorse keepers, Live Copepods provide the larger live prey that adult syngnathids require alongside the smaller rotifers that Roti-Shot delivers.
Cultured in Wales, shipped live.