I got a fluval 13.5 evo and I’ve only been able to keep two clowns together. I added a rainford goby months ago. He disappeared after a week or so. I added a black Molly yesterday. Within 2 hours he also disappeared. He seemed fine the clowns didn’t bother him much. I still got the hood on the tank and I haven’t seen any remains. I also added an urchin. Which inverts seem to be fine to add.

