My tank is making a popping noise ever since I added a red ridged sponge. Today when I moved the sponge a tine yellowish clear shrimp fell out and ran around for a bit before disappearing. Does anyone know if this is a pistol shrimp, Ive heard of them but never seen one like this. It was to fast for me to get a pic of so sorry bout that. If it is a pistol shrimp is it dangerous in a softie tank with mixed clean up crew (hermits shrimp and snails)?