According to Gram Research analysis, olive flounder fish require approximately 18.8 mg of pantothenic acid per kilogram of feed to achieve optimal growth and health. A 2026 research study found that fish receiving 10-20 mg per kilogram showed significantly faster growth and better feed efficiency compared to fish receiving no pantothenic acid supplementation, with additional benefits to liver health and immune function.
Scientists studied how much pantothenic acid (a B vitamin) olive flounder fish need to grow well and stay healthy. They fed different groups of young fish diets with varying amounts of this vitamin for 12 weeks. Fish that received moderate amounts of the vitamin grew faster, had healthier livers, and showed stronger immune systems compared to fish that received none. The research suggests that 18.8 mg of pantothenic acid per kilogram of fish food is the ideal amount for optimal growth and health in this species.
Key Statistics
A 2026 research study of olive flounder fish found that dietary pantothenic acid supplementation at 10-20 mg per kilogram significantly improved growth performance and feed efficiency compared to unsupplemented diets.
According to research reviewed by Gram, fish receiving pantothenic acid supplementation showed significantly lower liver fat levels and substantially higher β-oxidation activity (fat-burning capacity) compared to fish receiving no pantothenic acid.
A 2026 aquaculture study determined that the optimal dietary pantothenic acid requirement for olive flounder is 18.8 mg per kilogram of feed, based on analysis of weight gain and feed efficiency across seven different supplementation levels.
Research published in 2026 found that fish fed diets with 10-20 mg of pantothenic acid per kilogram had significantly higher immune defense markers, including lysozyme activity and immunoglobulin levels, compared to unsupplemented fish.
The Quick Take
- What they studied: How much pantothenic acid (a B vitamin) olive flounder fish need in their diet to grow properly and maintain good health
- Who participated: Young olive flounder fish weighing about 45 grams each, divided into 21 groups and fed different diets for 12 weeks
- Key finding: Fish fed diets with 10-20 mg of pantothenic acid per kilogram of food grew significantly faster and had better feed efficiency than fish receiving no pantothenic acid supplementation
- What it means for you: This research helps fish farmers feed their fish more effectively, which could lead to healthier, faster-growing fish in aquaculture. While this study focuses on fish, it demonstrates how important this B vitamin is for growth and immune function across different species.
The Research Details
Researchers created seven different fish diets: one with no added pantothenic acid and six others with increasing amounts (10, 20, 30, 40, 50, or 60 mg per kilogram of food). They divided young olive flounder fish into 21 tanks and fed each group one of these diets twice daily for 12 weeks. Throughout the study, scientists measured how much the fish grew, how efficiently they converted food into body weight, and checked their liver health, immune function, and antioxidant levels (substances that protect cells from damage). This approach allowed researchers to identify exactly how much of this vitamin produces the best results.
The study design is important because it tests a wide range of vitamin amounts to find the “sweet spot” where fish perform best. By measuring multiple health markers—not just growth—the researchers could see how pantothenic acid affects different body systems. This comprehensive approach gives fish farmers practical information about optimal nutrition.
Understanding the exact nutritional requirements of farmed fish is crucial for sustainable aquaculture. When fish receive the right amount of nutrients, they grow faster and healthier, which means farmers can produce more food with fewer resources. Additionally, healthier fish require fewer antibiotics and medications, which is better for the environment and human health. This research provides specific, actionable guidance that fish farmers can immediately apply to improve their operations.
This study was published in Marine Biotechnology, a peer-reviewed scientific journal, which means other experts reviewed the research before publication. The researchers used a controlled experimental design with multiple groups and measured multiple health outcomes, which strengthens the reliability of their findings. The study lasted 12 weeks, providing sufficient time to observe meaningful changes in fish health and growth. However, the research focuses specifically on one fish species, so results may not apply equally to other types of fish or animals.
What the Results Show
Fish that received 10-20 mg of pantothenic acid per kilogram of food showed significantly better growth and feed efficiency compared to fish receiving no pantothenic acid. This means these fish gained more weight and converted their food into body weight more effectively. The improvement was statistically significant, meaning it’s unlikely to have occurred by chance.
Liver health improved dramatically with pantothenic acid supplementation. Fish receiving the vitamin had lower fat levels in their livers and higher levels of pantothenic acid and CoA (a compound essential for energy production and fat metabolism). The liver’s ability to break down fats through a process called β-oxidation increased substantially in all groups receiving pantothenic acid.
Immune function showed clear benefits at moderate pantothenic acid levels. Fish fed 10-20 mg per kilogram had significantly higher lysozyme activity (an immune protein that fights bacteria) and anti-protease activity (another immune defense). Immunoglobulin levels (antibodies that fight infection) were elevated in the 10 mg group. These improvements suggest the fish had stronger natural defenses against disease.
Antioxidant enzymes—substances that protect cells from damage—increased in fish receiving pantothenic acid. Glutathione peroxidase activity increased in groups receiving 10, 20, and 40 mg per kilogram, while superoxide dismutase activity increased in groups receiving 10, 20, 50, and 60 mg per kilogram. These findings indicate that pantothenic acid helps fish protect their cells from oxidative stress (cellular damage from normal metabolism). Additionally, fish receiving pantothenic acid had higher levels of beneficial fatty acids (docosahexaenoic acid and α-linolenic acid), which are important for brain and heart health.
This research builds on previous nutritional studies in aquaculture by providing precise quantitative requirements for pantothenic acid in olive flounder. While pantothenic acid has been recognized as essential for fish health, this study is among the first to establish the specific optimal amount (18.8 mg/kg) through rigorous testing. The findings align with general principles from mammalian nutrition research showing that B vitamins support energy metabolism, immune function, and antioxidant defense, but provide fish-specific guidance that wasn’t previously available.
This study focused exclusively on olive flounder, so the results may not apply to other fish species with different metabolic rates or nutritional needs. The research was conducted in controlled laboratory conditions, which may differ from natural or commercial farming environments where fish face additional stressors. The study measured fish at 12 weeks, so long-term effects beyond this timeframe remain unknown. Additionally, the research doesn’t examine how pantothenic acid requirements might change as fish grow larger or during different life stages.
The Bottom Line
Based on this research, fish farmers raising olive flounder should supplement their feed with approximately 18.8 mg of pantothenic acid per kilogram of food to optimize growth, feed efficiency, and immune function. This recommendation has strong evidence from a controlled scientific study. Farmers should consult with aquaculture nutritionists to ensure this vitamin is properly incorporated into their feed formulations. For other fish species, similar research may be needed to establish species-specific requirements.
Fish farmers and aquaculture operations raising olive flounder should prioritize this finding for improving their production efficiency and fish health. Feed manufacturers and aquaculture nutritionists should use this information to formulate better fish diets. Consumers interested in sustainable seafood production benefit indirectly through improved farming practices. This research is less directly relevant to people not involved in fish farming, though it demonstrates the importance of proper nutrition for growth and health across species.
Fish in this study showed measurable improvements in growth and immune function within 12 weeks of receiving adequate pantothenic acid. Farmers implementing these dietary changes should expect to see improved growth rates and feed efficiency within 8-12 weeks. Liver health improvements and enhanced immune function may develop somewhat faster, potentially within 4-6 weeks, though the full benefits appear to require the full 12-week period.
Frequently Asked Questions
What is pantothenic acid and why do fish need it?
Pantothenic acid is a B vitamin that helps fish convert food into energy and supports immune function. A 2026 study found that fish receiving adequate pantothenic acid grew faster, had healthier livers, and showed stronger disease resistance than fish without this vitamin.
How much pantothenic acid should be added to fish feed?
Research shows that olive flounder fish perform best with 18.8 mg of pantothenic acid per kilogram of feed. Fish receiving 10-20 mg per kilogram demonstrated optimal growth and health benefits in a 2026 controlled study.
Does pantothenic acid improve fish immune function?
Yes. A 2026 study found that fish fed diets with 10-20 mg of pantothenic acid per kilogram had significantly higher lysozyme activity and immunoglobulin levels, indicating stronger natural defenses against infection.
Can too much pantothenic acid harm fish?
The 2026 research suggests that very high levels (above 40 mg per kilogram) may not provide additional benefits and could increase liver enzyme activity. Optimal results occurred at moderate supplementation levels of 10-20 mg per kilogram.
How quickly will fish farmers see improvements from adding pantothenic acid?
Fish in the 2026 study showed measurable improvements in growth and feed efficiency within 12 weeks. Farmers should expect to see better growth rates and feed conversion within 8-12 weeks of implementing the dietary change.
Want to Apply This Research?
- For aquaculture operations using a nutrition tracking app, log weekly measurements of fish weight gain, feed consumption, and feed conversion ratio (weight gained divided by feed consumed). Compare these metrics before and after implementing the 18.8 mg/kg pantothenic acid supplementation to quantify improvements.
- Aquaculture managers should update their feed formulation protocols to include pantothenic acid at 18.8 mg/kg and establish a system to verify that this amount is consistently included in each batch of feed produced. Set a reminder to review feed quality and pantothenic acid content monthly.
- Track fish growth performance (weight gain and feed conversion efficiency) monthly for at least 12 weeks after implementing the new feed formulation. Monitor liver health indicators through periodic fish sampling and analysis. Document any changes in disease incidence or antibiotic use as markers of improved immune function. Compare these metrics to baseline data from before the dietary change.
This research focuses on nutritional requirements for olive flounder fish in controlled laboratory settings and is intended for aquaculture professionals and fish farmers. The findings may not apply to other fish species or to fish raised in different environmental conditions. While this study provides valuable guidance for optimizing fish nutrition, individual farming operations should consult with aquaculture nutritionists and veterinarians to ensure recommendations are appropriate for their specific circumstances. This information is not intended to replace professional agricultural or veterinary advice.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.