We are so close to the coast but no 24 hour oyster bar, or even one open past midnight?
How about other seafood in the wee hours? Any of the 24 hour Mexican places do a decent job on some seafood at that hour, especially ceviche? I checked Spanish Flowers menu; no ceviche at any rate. Chapultepec? Rico's?
Coctel de Camaron? I'm not looking for fried fish, especially catfish!