The petco in milford isn't bad. they do have a decent selection. alot of common stuff that can be found in other stores, but a wide variety in one place, saves u a little shopping around. huge store, alot of stuff for fish keeping. It's a bit far from stamford but there is also another store up the street called pet supplies plus in orange that has a small collection of fish, every once in a while they will have something off the wall. There is also slither and swim in west haven that has a decent selection of fish, but they seem to have some older fish that have been there a while. if u wanna make the trip all three stores are within 10 minutes of each other. There is also another petco in stratford right off of 1-95, could make a stop there on ur way up from stamford. they usually have different fish than the one in milford.... hope that helps