The mountain girls are really cute. Yamame is a masu/cherry salmon, and Iwana is a whitespotted char. It's an ichthyology lesson disguised as a cute girl manga!
Ooh, and a bit on their names from what bit I can gather (yay Wikipedia!)
Sakurai Yamame: Sakurai likely comes from the cherry salmon bit, and Yamame is a common Japanese name for a landlocked subspecies of the masu (O. m. ishikawae with black spots, or O. m. macrostomus with red spots).
Iwai Iwana: Not much for this one. Iwana is the common Japanese name for the whitespotted char. No idea on the Iwai part.
last edited at Sep 11, 2015 1:55PM