Going from 1 to 2 is 100% growth rate.
Going from 60 to 62 is a 3.3% growth rate.
Constraint is in how the data has been analyzed and conclusion reached for making a case to support rebuilding wild fish stocks – which should be done regardless of market requirements.
In the wild the shrimp strategy is survival over growth – to reproduce for continuation of the species.
On a farm domesticated shrimp are not healthy shrimp that would flourish normally in the wild.
Farmed shrimp are geared to fulfil a particular, limited purpose, not to live a full and rounded life.
Increases in growth rate, which would be irrational for a wild shrimp, make perfect sense in a crop, because crops live for people, not themselves.