[Updated below]
After I promoted Saturday's piece about the Mueller indictment on Twitter some seemingly automated accounts retweeted my promotion.
The original piece is about an internet marketing scheme that is supposed to have influenced U.S. elections. It is thus amusing that the retweeting bots are part of an internet marketing scheme that is supposed to influence U.S. elections.
But why do they use the line "Omg. Fish is priceless"?
My original tweet:

source – bigger
The automated(?) retweets:

source – bigger

source – bigger

source – bigger

source – bigger

source – bigger

source – bigger

source – bigger

source – bigger
[Update – 12:50 EST]
Commentators pointed out:
1. The first retweet shown above, which introduced the 'fish' line, is from a real person. Debbie Lusigman, the @saneprogessive, who has her own video channel with lots of legit content. The other tweets though are copies (not regular retweets) of the first retweet.
(h/t oldandyoung and integer)
2. The other personalities are likely bots that may well be run by one Scott Dworkin, a grifter who runs the fundraising campaign Democratic Coalition and channels most of the funds to a company he owns. Geoff Miami found the connection and reported on it at Progressive Army.
(h/t Demeter)