To analyze the variations in relative importance of the Tetradontidae
fishery, the evolution of RII was estimated for this family
from 1998 to 2008. Our findings reveal that this index ranged between
a minimum of 15 in 2002 and a maximum of 28 in 2006,
with a clear tendency to increase in importance among the families
of marine fishes exploited. Fig. 2 shows a minor variation in catches
and fishing intensity measured through OCLRs. The rise in RII is due
to the increase in the value of catches, evident in the separation
between catch and production value. This finding evidences a
steady rise in product prices on landing sites in recent years.