The Fish tank goes on.

Miami traded safety Minkah Fitzpatrick to the Steelers in exchange for a 2020 first-round pick, ESPN reported Monday night.

That Fitzpatrick — the highly touted 11th pick from the 2018 draft — was traded was not a shock, as the woebegone Dolphins put him on the trade block after getting off to an 0-2 start.

But the move from Pittsburgh’s perspective is a surprise, seeing as the Steelers also are winless and now without starting quarterback Ben Roethlisberger, who will miss the rest of the season after suffering an elbow injury.

Pittsburgh seems to be all-in on backup Mason Rudolph; if he fails, the Steelers would be giving up a very high pick in an upcoming NFL draft loaded with quarterback talent.

Fitzpatrick has 58 tackles and two interceptions in parts of two seasons.