The amount of fish that measure more than $1 \frac{1}{2}$ inches in length is greater $\left(6 f i s h\right)$ than the amount measuring less than $1 \frac{1}{2}$ inches which is only $\left(5 f i s h\right)$.
The fish that measures $1 \frac{4}{8}$ inches or $1 \frac{1}{2}$inches is the only single fish in its category. There are $6$ larger fish, and only $5$ smaller fish.