Mexico: up to 5 per species and 10 saltwater fish per day
5 specimens of the species per angler per day, within the limit of 10 saltwater fish
In federal waters of Mexico, recreational sport fishing allows each angler to keep up to 10 marine fish per day, no more than 5 of the same species. The Pacific cabrinha (rubio volador) is not among the species reserved for sport fishing (marlins, sailfish, swordfish, tarpon (sábalo), roosterfish and dorado, up to 50 nautical miles from shore, item 0.3 of the standard) and has no quota of its own. Fish over the quota must go back alive, and sport-caught fish may not be sold. From shore you need no permit; from a boat, you do (permits under the Federal Duties Law, item 4.3).
Source: Amendment to NOM-017-PESC-1994 (recreational sport fishing in federal waters of Mexico), published in the DOF on Nov 25, 2013, items 0.3, 4.3, 4.9.1, 4.9.5 and 4.11 (Sagarpa/Conapesca)
Peru: minimum size of 20 cm for the falso volador
20 cm total length (tolerance of up to 20% of smaller fish)confirm with the agency
Ministerial Resolution 209-2001-PE, of the former Ministry of Fisheries (now PRODUCE), prohibits extracting, receiving, transporting, processing and selling the falso volador (Prionotus stephanophrys) under 20 cm total length. The annex allows up to 20% smaller fish in the catch. The rule dates from 2001, and the annex changed for other species after it: check with PRODUCE whether the value is still in force.
Source: Resolución Ministerial nº 209-2001-PE (Ministry of Fisheries, Jun 26, 2001), art. 3 and Annex I, list of minimum catch sizes for marine fish