| Days |
Skin |
Eyes |
Gills |
Flesh colour |
Outer slime |
EC Grade |
| 0 |
Bright, shining ; firm |
Translucent cornea; convex; absence mucus |
Fresh odor;
red color |
Pinkish white |
thin;
transparent |
E |
| 3 |
Bright shining; firm |
Translucent cornea; convex; absence mucus |
Fresh odor;
red color |
Pinkish white |
thin;
transparent |
E |
| 6 |
Bright shining; firm |
Translucent cornea; convex; absence mucus |
Fresh odor; red color |
Pinkish white |
thin;
transparent |
E |
| 9 |
Waxy; slight loss of shine; soft |
Opalescent cornea;
plane; moderate mucus |
Fishy odor;
red color |
Whitish |
Aqueous; transparent |
A |
| 12 |
Waxy; slight loss of shine; soft |
Opalescent cornea; plane; moderate mucus |
Stale odor;
dark red color |
Whitish |
Opaque; thick;
slight milky |
B |
| 14 |
Dull; some bleaching |
Opalescent cornea; plane; excessive mucus |
Stale odor; dark red color |
Whitish with slight yellow stain |
Opaque; thick;
slight milky |
B |
| 15 |
Dull; some bleaching |
Opalescent cornea; sunken; excessive mucus |
Spoiled odor; dark red color |
Whitish with slight yellow stain |
Thick;Milky |
C |
