>>2467372Star Trek strange new worlds.
They fished the LA river in the first season of the reality tv show "The Colony" but since it was reality TV I would guess the fish had been dumped in that part of the river - they weren't fishing with bait just netting with shitty home made traps so that strongly supports the theory that the fish weren't native they were just in the water so stressed out they wouldn't eat so the idiot contestants put them in a net.
https://www.youtube.com/watch?v=IOKO19BMPKk 