mellow pasture
So on the Wiki it says you can catch Arapaima in all seasons, but Spring and Summer are Savannah only. It also says that the weather conditions have to be Rain, Storm, Snow, and Blizzard. It also says you can catch them only in the Evening and Night.
However, I got a TV channel in-game that says you can catch than all DAY in spring in the Forest River.
It's the same for Gator Gar, the game says all day in spring, but the wiki says Spring, morning or afternoon, and it has to rain or storm.
gusty shoal