[Rendar]

You have caught a Large Squid!
The Large Squid weighs in at 27!
Dormeho: Redhead Doctor is now sitting at 1st with their 27W Large Squid!
Dormeho: DEBUG: There was no ref! Please report this on the forums!

You use the Super Rod.
You cast out your line.
Instructions: Wait until your rod starts shaking. Then input the movement directions that appear on screen as quickly as possible.

You have caught a Large Eel!
The Large Eel weighs in at 16.5!
Dormeho: DEBUG: There was no ref! Please report this on the forums!

[Autumn]

I don't know if this info will serve any use but this'll happen randomly too during the fishing contest, and even when you're not fishing, or if anyone catches anything.

[Neus]

It should show up to everyone in the region, that's normal.

Any more details? What's the contest standings look like when this happens? Is anyone who entered logged off when it happens? Is it only during fishing contents that occur after the first one since the server reset?