Table 1. Colour scale used to describe the progression of melanosis (black spot) on pink shrimp (Adapted from Otwell and Marshall, 1986).

 

 

Melanosis Scale

 

Description

0

Absent

2

Slight, noticeable on some shrimp

4

Slight, noticeable on most shrimp

6

Moderate, noticeable on most shrimp

8

Heavy, noticeable on most shrimp

10

Heavy, totally unacceptable