The quality of shrimp farming is heavily governed by the 'seed stock (broodstock and postlarvae)' that comes before pond management or feed. The seed-stock major Kona Bay, which holds that upstream, has made a full-scale entry of its next-generation line 'Balance Pro' into the Vietnamese market. Its parent is the Dutch animal genetics and breeding company Hendrix Genetics, and Balance Pro is a new line announced on November 5, 2025 at the Hatch India Show 2025 held in Visakhapatnam, India. Japan imports large volumes of processed shrimp from Vietnam, and if seed-stock quality rises it works toward the size uniformity, supply volume and price stability of the shrimp that ultimately reaches Japanese supermarkets and foodservice. That is precisely why the upstream move is worth following.
Balance Pro is seed stock raised 'without eyestalk ablation'; what Kona Bay flies is predictability
The most distinctive point in Kona Bay's account is that Balance Pro is 'ablation-free breeding' that does not perform eyestalk ablation. In conventional shrimp seed-stock production, the technique of ablating the eyestalk to induce females to spawn has been widely used. Avoiding this becomes an element easy for welfare-minded European and Japanese buyers to build into their sourcing criteria. Kona Bay's commercial head, Deepak Patnaik, positions Balance Pro as 'an answer to the unpredictability of shrimp farming.' In other words, it is seed stock aimed at smoothing out hit-or-miss farming results with genetic stability.
Kona Bay's seed stock holds SPF (specific pathogen free) certification and is supplied from broodstock free of the specific pathogens designated by the OIE (now WOAH). This is closer to the idea of 'protecting through hygiene management that does not bring disease in' than 'creating disease-resistant genes.' Without exaggerating disease resistance itself, the stance is to raise performance with the two wheels of biosecurity and selective breeding.
Kona Bay's Balance line has a 70-80% survival rate; Balance Pro is its improved version
Because figures for Balance Pro on its own are limited in public corporate disclosure, we want to grasp the published metrics of the underlying Balance line. The Balance line benchmarks Kona Bay shows on its own site are a survival rate of 70-80% in an average pond and a daily weight gain (ADG) in the range of 0.27 to 0.33 grams. Growth is said to extend more easily in a managed biosecure environment or a biofloc system. Balance Pro is positioned as having further raised growth, survival and feed efficiency on this Balance base. Letting the figures walk on their own is to be avoided, but whether this range of stability can be secured at the seed-stock stage heavily governs the yield in later processes.
| Process | What happens with seed-stock improvement | Impact on the Japanese side |
|---|---|---|
| Seed stock (Kona Bay Balance Pro) | Uniform growth, raised survival rate | Supply swings narrow |
| Farming pond | Less mortality loss, consistent size | Volumes by grade become readable |
| Processing plant | Improved yield, stable peeled-meat grade | Stable processing raw-material cost |
| Exports to Japan | Improved predictability of volume and quality | Shelf prices and inventory plans become easier to put together |
In the field trial at Phan Rang, Size 60 and DOC80+, run in Vietnam's harsh field
Kona Bay is field-testing Balance Pro in Phan Rang, Ninh Thuan province, south-central Vietnam. Phan Rang is known for high salinity and high water temperature, a difficult farming zone where a weak line does not stabilize its results. The published field metrics are around Size 60 at over 80 days of farming (DOC80+), with a stocking density of about 500 shrimp per square meter. Vietnam's shrimp production areas range from the southern Mekong Delta (Ca Mau, Bac Lieu, Soc Trang) to the south-central region with large environmental differences, and a line that holds up there is easy to use across a wide range of ponds. A seed-stock maker choosing a difficult field rather than a 'high-achieving site easy to test in' to produce numbers is a move conscious of persuasiveness to practitioners.
Vietnam's rice-paddy-and-shrimp combined operations and efforts toward low-emission shrimp are something this outlet has followed too. Moves to prove sustainability are strengthening from downstream (export requirements), but Balance Pro has a composition of joining the same current from the upstream seed-stock side. The EU and an NGO over 42 months: will Ca Mau's 'low-emission shrimp' become proof for sourcing The focus is whether the 'cost of proof' seen there can be lowered by seed-stock uniformity.
What Japanese sourcing staff should confirm is ablation-free, SPF and the reproducibility of size uniformity
In Japanese shrimp sourcing, the seed-stock story usually does not come to the surface. But what actually works are the following three points. One is ablation-free breeding, easy to put onto the private-brand standards and ESG sourcing of retailers that fly animal welfare. The second is SPF certification, which is insurance against a sudden supply shock from disease. The third is the reproducibility of size uniformity: if it stabilizes around Size 60, the grades for sushi toppings and frozen peeled shrimp become easier to read across the year.
As practical work on the sourcing side, the realistic move is to confirm, as a specification, the 'seed-stock line used' and 'whether it is ablation-free and SPF' with import trading companies and processing partners. In Vietnam, securing seed-stock supply and sales channels has been a barrier to entry for small and medium producers. The seedlings and sales channels she hands out after quitting accounting: how Ha Tinh swamp eel earns As depicted there, whoever holds seed stock and the exit as a set is strong. The same logic works with shrimp, and the availability of good seed stock will change the lineup of producers.
If you imagine the form that ultimately reaches the Japanese table, the quality of exports to Japan beyond farming and processing is the key. Vietnam Clean Seafood makes its first shipment of sashimi-grade tilapia fillets to Japan As in that example, Vietnamese seafood has entered a stage of aiming for 'sashimi grade.' If seed-stock improvement advances for shrimp too, Vietnamese presence may grow further in highly processed products for Japan.
Does seed-stock improvement really change supply to Japan
So, does raising seed-stock quality change the shrimp reaching Japanese supermarkets and foodservice? The fair answer is around 'it works directionally, but will not change dramatically right away.' Balance Pro is still at the early stage of its Vietnam rollout, and many of the published figures stay at the underlying Balance line or one example of a field trial. Even if seed stock becomes uniform, if something in the later farming, processing or transport wavers, the size uniformity and price at the storefront cannot be fully leveled. Still, it is certain that the competitive axis is being brought forward from pond-management technique to the genetic quality of seed stock, and if Japanese sourcing staff can move the three -- ablation-free, SPF, field adaptation -- from 'caring about' to 'writing into the specification,' supply stability and quality reproducibility will steadily rise. The upstream move is quiet, but it works gradually across every process up to the table.
