Gar

The Gar (ガー, Gā) is a freshwater fish in the introduced in. It sells for 6,000 Bells, and it appears in summer from 4:00 PM to 9:00 AM.

Donating to the museum
When placed in the museum, the Gar shares a tank with the Arapaima, the middle tank in and the middle-right tank in. Until, Blathers makes a small speech about the donated Gar.

In
Blathers will say this when given the long fish:

In
Once donated to the museum, the Gar can be found in the recessed fish tank in the first fish exhibit with the Pike.

Real-world information
This fish can be caught up to about 4 meters (12 ft) in length. Its scales are diamond-shaped and are sometimes used for jewelery. It appears in North America, particularly the United States of America.