Nope only have two baby clowns. nothing else. one is female, bossy and larger. kinda beats up on the smaller one at feeding time, he rolls over and flutters. They are supposed to be 10 mos old now.
I dont have any live rock. Its too expensive and I dont want to grow corals etc , yet anyhow..so no hitch hikers that way.
So. the noise is definitely coming from the Clown fish . I thought they were rearranging the small decoration rocks , banging it against the glass. then I read they can make noise..... Youtube says they can BARK !! HA
I used CaribSea’s Arag-Alive!™ substrate and Instant Ocean Sea Salt and some coral type FAKE decorations and of course a filter, heater, Hydrometer etc.