Ingredient record
Krill
“Krill” appears in the ingredient information of at least one indexed pet food. Preparation, inclusion amount and the rest of the formulation can differ between products.
How to read this entry
We classify this term as named ingredient in the animal protein category. The linked products supply the observation; they do not by themselves establish the ingredient’s nutritional effect.
Check the declared animal species, processing form and proportion. A shared source name does not mean two products use the same cut, preparation or amount.
Evidence status
This is an ingredient index entry linked to product information. We have not completed an ingredient-specific research appraisal for this entry. A term’s presence in a product does not demonstrate a health outcome, nutritional adequacy or the effect of that product.
Source and review
Product ingredient sections checked 24 September 2026. The linked product records show the wording and available source context. Manufacturer formulations and labels may change; verify the current pack and the intended market.
Research on this ingredient
Koi
Whole-fat and defatted krill powder in koi diets
One study with 6 reviewed arm or dose connection(s).
Arm defatted_krill_fm_replacement_10
Whole-fat and defatted krill powder in koi diets
Direct · koi. 630 red-and-white koi carp, initial weight about 13.5 g; seven diet groups with three replicate tanks of 30 fish.
Tested form: Defatted Antarctic krill powder replacing fish meal. Dose: 10% fish-meal replacement (Replacement percentage of fish meal, not percentage of the whole diet; oral feeding). Duration: 60 days. Comparator: Fish-meal-based control diet without krill replacement.
Measured finding: The tested diets changed growth, colour and immune measures. Liver changes were also observed at high inclusion: lipid droplets with full-fat 20% and 30% replacement and adverse findings with defatted 30% replacement. The reviewed abstract does not isolate every endpoint for each arm.
Limitations: Koi-specific tank trial; whole-diet replacement comparisons. Full-fat and defatted krill are different preparations. Results do not establish effects or safe inclusion levels for every krill-containing ornamental-fish product.
Arm defatted_krill_fm_replacement_20
Whole-fat and defatted krill powder in koi diets
Direct · koi. 630 red-and-white koi carp, initial weight about 13.5 g; seven diet groups with three replicate tanks of 30 fish.
Tested form: Defatted Antarctic krill powder replacing fish meal. Dose: 20% fish-meal replacement (Replacement percentage of fish meal, not percentage of the whole diet; oral feeding). Duration: 60 days. Comparator: Fish-meal-based control diet without krill replacement.
Measured finding: The tested diets changed growth, colour and immune measures. Liver changes were also observed at high inclusion: lipid droplets with full-fat 20% and 30% replacement and adverse findings with defatted 30% replacement. The reviewed abstract does not isolate every endpoint for each arm.
Limitations: Koi-specific tank trial; whole-diet replacement comparisons. Full-fat and defatted krill are different preparations. Results do not establish effects or safe inclusion levels for every krill-containing ornamental-fish product.
Arm defatted_krill_fm_replacement_30
Whole-fat and defatted krill powder in koi diets
Direct · koi. 630 red-and-white koi carp, initial weight about 13.5 g; seven diet groups with three replicate tanks of 30 fish.
Tested form: Defatted Antarctic krill powder replacing fish meal. Dose: 30% fish-meal replacement (Replacement percentage of fish meal, not percentage of the whole diet; oral feeding). Duration: 60 days. Comparator: Fish-meal-based control diet without krill replacement.
Measured finding: The tested diets changed growth, colour and immune measures. Liver changes were also observed at high inclusion: lipid droplets with full-fat 20% and 30% replacement and adverse findings with defatted 30% replacement. The reviewed abstract does not isolate every endpoint for each arm.
Limitations: Koi-specific tank trial; whole-diet replacement comparisons. Full-fat and defatted krill are different preparations. Results do not establish effects or safe inclusion levels for every krill-containing ornamental-fish product.
Arm full_fat_krill_fm_replacement_10
Whole-fat and defatted krill powder in koi diets
Direct · koi. 630 red-and-white koi carp, initial weight about 13.5 g; seven diet groups with three replicate tanks of 30 fish.
Tested form: Full-fat Antarctic krill powder replacing fish meal. Dose: 10% fish-meal replacement (Replacement percentage of fish meal, not percentage of the whole diet; oral feeding). Duration: 60 days. Comparator: Fish-meal-based control diet without krill replacement.
Measured finding: The tested diets changed growth, colour and immune measures. Liver changes were also observed at high inclusion: lipid droplets with full-fat 20% and 30% replacement and adverse findings with defatted 30% replacement. The reviewed abstract does not isolate every endpoint for each arm.
Limitations: Koi-specific tank trial; whole-diet replacement comparisons. Full-fat and defatted krill are different preparations. Results do not establish effects or safe inclusion levels for every krill-containing ornamental-fish product.
Arm full_fat_krill_fm_replacement_20
Whole-fat and defatted krill powder in koi diets
Direct · koi. 630 red-and-white koi carp, initial weight about 13.5 g; seven diet groups with three replicate tanks of 30 fish.
Tested form: Full-fat Antarctic krill powder replacing fish meal. Dose: 20% fish-meal replacement (Replacement percentage of fish meal, not percentage of the whole diet; oral feeding). Duration: 60 days. Comparator: Fish-meal-based control diet without krill replacement.
Measured finding: The tested diets changed growth, colour and immune measures. Liver changes were also observed at high inclusion: lipid droplets with full-fat 20% and 30% replacement and adverse findings with defatted 30% replacement. The reviewed abstract does not isolate every endpoint for each arm.
Limitations: Koi-specific tank trial; whole-diet replacement comparisons. Full-fat and defatted krill are different preparations. Results do not establish effects or safe inclusion levels for every krill-containing ornamental-fish product.
Arm full_fat_krill_fm_replacement_30
Whole-fat and defatted krill powder in koi diets
Direct · koi. 630 red-and-white koi carp, initial weight about 13.5 g; seven diet groups with three replicate tanks of 30 fish.
Tested form: Full-fat Antarctic krill powder replacing fish meal. Dose: 30% fish-meal replacement (Replacement percentage of fish meal, not percentage of the whole diet; oral feeding). Duration: 60 days. Comparator: Fish-meal-based control diet without krill replacement.
Measured finding: The tested diets changed growth, colour and immune measures. Liver changes were also observed at high inclusion: lipid droplets with full-fat 20% and 30% replacement and adverse findings with defatted 30% replacement. The reviewed abstract does not isolate every endpoint for each arm.
Limitations: Koi-specific tank trial; whole-diet replacement comparisons. Full-fat and defatted krill are different preparations. Results do not establish effects or safe inclusion levels for every krill-containing ornamental-fish product.
Products listing or mentioning this ingredient
24 products linked through reviewed ingredient occurrences from manufacturer declarations or partial editorial summaries. Whole-label verification may remain pending. An ingredient’s presence alone does not establish a nutritional outcome.
- Arden Grange Adult Chicken & Rice Arden Grange Adult Chicken & Rice, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Arden Grange Adult Grain Free Fresh Chicken & Potato Dry Cat Food Arden Grange Adult Grain Free Fresh Chicken & Potato Dry Cat Food, UK declaration checked 2026-09-25; United Kingdom; manufacturer declaration Cat; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Arden Grange Adult Lamb & Rice Arden Grange Adult Lamb & Rice, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Arden Grange Adult Salmon & Rice Arden Grange Adult Salmon & Rice, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Arden Grange Kitten Grain Free Fresh Chicken & Potato Dry Cat Food Arden Grange Kitten Grain Free Fresh Chicken & Potato Dry Cat Food, UK declaration checked 2026-09-25; United Kingdom; manufacturer declaration Cat; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Arden Grange Large Breed Adult Chicken & Rice Arden Grange Large Breed Adult Chicken & Rice, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Arden Grange Large Breed Puppy/Junior Chicken & Rice Arden Grange Large Breed Puppy/Junior Chicken & Rice, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Arden Grange Light Adult Chicken & Rice Arden Grange Light Adult Chicken & Rice, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Arden Grange Light Grain Free Fresh Chicken & Potato Dry Cat Food Arden Grange Light Grain Free Fresh Chicken & Potato Dry Cat Food, UK declaration checked 2026-09-25; United Kingdom; manufacturer declaration Cat; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Arden Grange Senior Chicken & Rice Arden Grange Senior Chicken & Rice, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Arden Grange Sensitive Adult Ocean White Fish & Potato Arden Grange Sensitive Adult Ocean White Fish & Potato, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Arden Grange Sensitive Grain Free Ocean White Fish & Potato Dry Cat Food Arden Grange Sensitive Grain Free Ocean White Fish & Potato Dry Cat Food, UK declaration checked 2026-09-25; United Kingdom; manufacturer declaration Cat; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Arden Grange Sensitive Large Breed Adult Ocean White Fish & Potato Arden Grange Sensitive Large Breed Adult Ocean White Fish & Potato, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Arden Grange Sensitive Puppy/Junior Ocean White Fish & Potato Arden Grange Sensitive Puppy/Junior Ocean White Fish & Potato, editorial ingredient summary 2026-09-24; UK; partial summary Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Hikari Oranda Gold Hikari Oranda Gold, editorial ingredient summary 2026-09-24; United States; partial summary Fish, Goldfish; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Hikari Staple Koi Food Hikari Staple Koi Food, editorial ingredient summary 2026-09-24; United States; partial summary Fish, Koi; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Pero Foods Low Calorie - Salmon & Brown Rice Pero Foods Low Calorie - Salmon & Brown Rice - Pero Foods Low Calorie - Salmon & Brown Rice; United Kingdom; manufacturer declaration Dog; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Saki-Hikari Growth Saki-Hikari Growth, editorial ingredient summary 2026-09-24; United States; partial summary Fish, Koi; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Saki-Hikari Multi-Season Saki-Hikari Multi-Season, editorial ingredient summary 2026-09-24; United States; partial summary Fish, Koi; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Sera Immune Probiotic Granules Sera Immune Probiotic Granules, editorial ingredient summary 2026-09-24; ; partial summary Fish; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Sera Plankton Color Tabs Sera Plankton Color Tabs, editorial ingredient summary 2026-09-24; ; partial summary Fish; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Sera San Color Flakes Sera San Color Flakes, editorial ingredient summary 2026-09-24; ; partial summary Fish; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Sera San Color Granules Sera San Color Granules, editorial ingredient summary 2026-09-24; ; partial summary Fish; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope
- Tetra Betta Mini Flakes Tetra Betta Mini Flakes, editorial ingredient summary 2026-09-24; UK; partial summary Bettas, Fish; Source data captured; Label verification pending; Evidence applicability requires the stated ingredient and study review scope