It’s been on his mind for the past 10 years, but finally, seafood specialist and owner of Esposito’s in Carlton Maurice Esposito gets to open his second restaurant. Taking its names from Saint Peter, whose thumbprint, legend has it, accounts for the day spot on the flank if the John Dory fish, will seat 120 in the split-level former Canary Club site behind Russell Street when it opens early October. Esposito says diner can expect a relaxed bar atmosphere with mains capped at about $35. This ocean trout ha been cured in a mix of salt, sugar, mandarin and tarragon and comes with a salad of fresh witlof, fennel, garlic and mayonnaise. It costs $19.