Many people have been throwing away fish that they’ve been unable to keep at home – in particular Amazonian fish such as piranhas – into the Tama River.
This has become quite problematic as it’s destroying the ecosystem.
Osakana Post is a facility that captures fish thrown into the river.
(that they)’ve been unable to keep
the Tama River
have been throwing away (fish)
(this) has become
Osakana Posuto wa/ha,