I've got a 5 gallon nano tank and would like to add in something unique and seen a lot of people using pistol shrimp however I see mixed opinions as so many people have witnessed them go on murderous rampages in a small tank. I have two hi fin goby on order and wanted to get a candy cane to go with them in hopes that they'd pair. If the murderous shrimp is a no go what else would be super cool for a 5 gal?