I was going to say CRAYFISH BOTTOM FEEDERS but in trying to educate myself i learned that they would be competing with the shrimp. so instead of shrimp farm, Crawdad farm! you do one, i’ll do the other, we’ll be neighbors, we can ride ponies to work, mine will be named Snuffles and yours will be named Clip Clop (Clip Clop loves salt licks so don’t let her near the tank) and we can put it right next to the cheesery and cafe that i just decided is part of my fantasy.