When placing a bucket of Pufferfish, Salmon or Cod in an open area, the fish will randomly appear and disappear.

Brief Description:
When placing a bucket of Pufferfish, Salmon or Cod in an open area, the fish will randomly appear and disappear.

Steps to Reproduce:

1. Build a flat area, so that when placing a bucket of water, it is able to spread equally in all directions.
2. Stand still and place a bucket of pufferfish, salmon or cod and you will notice they randomly appear and dissapper.

Observed Results:

The fish randomly appear and disappear.

Expected Results:

The fish should remain visible at all times.

Screenshots/Videos:

I've attached two images. Which show how the fish randomly appears and disappears.