Fig 4 Important lengthscales of 25 wild–type fish (○) and mutant fish (▫).
(a) The nearest neighbour distance and the persistence length for the fish. Each scatter represents the average value in 2 minutes, whose grayscale values represent the age of the fish. (b) The relationship between the group polarisation and the reduced persistence length values. The data points represent the experiments and the line represents the simulation result where the fish obey the updating rule in