降河回遊 こうかかいゆう

kōka kaiyū

1. Not descending the river to spawn.; Not returning to the river to spawn.

1. Was descending the river and wandering.

1. Descending the river and roaming.; Descending river migration.

1. Descending river migratory

1. Is not descending the river and wandering.; Is not going downriver to roam.

1. It's not a river descent tour.; It's not a river cruise.

1. Was descending the river and roaming.

1. Descending the river and roaming.; Descending and wandering the river.

1. Is not descending the river and roaming.; Is not traveling downriver.

1. Was not migrating down the river.; Did not migrate down the river.

1. Probably descending river migration.

1. Was not descending the river and roaming.; Did not descend and roam the river.

1. Didn't go downstream.; Didn't migrate downstream.

1. Probably descending the river and migrating.

1. Was not descending the river and roaming.; Was not traveling downriver.

1. If/when the salmon return to the river.

1. If/when descending the river and migrating; If the river descent and migration occur

1. If/when the salmon return to the river.; If/when the river salmon run.