For some time I had wanted to investigate the cluster of promising-looking Mexican restaurants in downtown Oxnard, and took a first stab on Sunday. Los Molcajetes on Fifth Street--a medium-sized place, with lots of writing in the window (often a good sign), vinyl booths, and lots of seafood on the sort-of-confusing menu--didn't disappointed. I didn't see the seafood tacos on the menu, but tasted them when someone else in my party ordered them. That's what I'll have next time. I went for an abalone and shrimp cocktail--teriffic. There were several octopus dishes that looked intriguing, too. Then I moved on to a carnitas platter, garnished with very nicely charred scallions. Excellent rice and beans, and serviceable (if undersalted) carnitas. Also tried camarones with tequila sauce--very good. Loved the corn tortillas (homemade, or a great facsimile). And if we weren't enjoying ourselves enough (we were), damned if an extremely exhuberant mariachi didn't waltz in, truly making our day.