So current inhabitants are 1 california stingray, 1 bamboo shark, 1 zebra moray, 1 bat fish, 1 lionfishsh, and 1 crocodile fish.
The crocodile fish is the one in between those rocks.
The bat fish is fairly easy so far, came already eating frozen foods and started eating well day one but I've only had him less than a week. Also this is my first bat fish so I dont think I could comment on how hardy or difficult they are to keep
Unfortunately I have lost 1 California stingray and my marbled catshark