

The National Aquarium of DC is the grandfather of the National Aquairum in Baltimore. It is located on 14th street close to Constitutional Blvd. When the Baltmore Aquarium was built, it was supposted to close down the DC aquarium, but private and federal donations kept it open. It's a small public aquarium, a fraction of the Baltimore size, but the entrance fee is only $10. About 1/3 of the tanks are fresh water, and the remainder salt. It used to have a Frontosa colony tank I love, but now replaced with a native fish tank.
The arrow is definitely a silver, and it could be 3 ft as I am not good at estimating length in a big tank. There is also a huge oscar that is at least 18", fighting with a pair of breeding severem. What is the name of the big red tail tetra fish above he arrow.