Nassarius snails
Fighting conch
Sand sifting sea star
Diamond gobies are cool but they can cloud up water for a while.
I have plenty of spaghetti worms and stromatella snails that do a great job picking up food
dymondf gobies all the way i have all of what mention above except the jawfish those gobies get it done buy far the best sand sifter imo and any fish can be jumpers
I have had a sand sifting star for over two years now without issue. I agree that they will starve if there is not enough food to go around like anything else. I would def recommend having a sand sifting star but more than one depends on the size of your system as they consume high rates at a time.