PET PROJECT: Michael Nallen, co-owner of Oceans of Pets in Woonsocket, started the store in 1987 with his wife, Joyce. Today annual revenue tops $1 million. / PBN PHOTO/MICHAEL SALERNO
Michael Nallen, the co-owner of Oceans of Pets, competes with corporate giant PetSmart, which recently moved within five minutes of his Diamond Hill Road store. Smaller, independently run pet stores, including this one, are struggling to hold their own against big-box retailers, but Nallen, 58, whose love of fish – the focus of the store…