Table 3. Best estimates of length-at-age for North African catfish Clarias gariepinus from 16 populations throughout the distributional range of the species
Age	Length-at-age	90% Confidence intervals
years	Best fit	Lower	Upper
1	322	287.9	354.9
2	425.7	403.1	446.8
3	521.9	505.3	544.5
4	611.3	591.6	634.4
5	694.2	673.2	715.4
6	771.1	749.3	791.8
7	842.6	816.8	866.9
8	908.9	872.5	944
Source: calculated by the author