Are these fish compatible? 3

hey guys! (this is my third attempt on getting good fish)
so for the last 5 years I have been dreaming of having this perfect tank with

A snowflake eel who is most peaceful at times but when the prey comes to him he STRIKES and eats the fish. Eels have been my favorite fish ever since I was a little kid.

A comet grouper (marine betta) who is mostly shy and scared and mimics the white mouthed moray but when a small guppy comes swimming by he wraps his tail around and devours the fish.

A tomato clown for his courage to break up fights from my two damsels in my old 20g and majestically eats his pellets. Peaceful but territorial. (R.I.P 2 damsels died from ich)

A white spotted toby who lives in the Hawii and can pick pellets out of live rock with his sharp nose.

A dwarf zebra lionfish who quickly chomps down on a goldfish with nothing less than a tail sticking out. Beautiful yet deadly

A pincussion sea urchin the way they look is amazing and I have always loved seeing them on family vacations. is a great clean up crew for predator tanks.

A group of dwarf hermit crabs that always cheer me up
I was once taking care of a friends 30 gallon tall tank and he had this huge ancient piece of live rock of a coral which I had left a pellet on, so I watched 2 movies and came back just in time the hermit crab climed up the live rock and right when he got on the very top he fell over and went back to the bottom I laughed for a good five minutes. One of the wrasses ended up eating it. These things are fast for food!

A Turbo Snail which have helped me in so many of my algae outbreaks. In one of my first aquariums he ate so much algae and became so fat he could hardly move anymore ;D But he was still very cool with his clam on his shell.

But I feel I'm missing something to complete the tank (it seems empty), it has been bugging me for the last 2 years and I still can't decide. I have a 55 gallon filled with caves (60 pounds of live rock) and my first fish (the tomato clown) is in there along with 6 hermit crabs and 4 turban snails. The tomato clown is being moved to a 30 gallon and is too big for fish too swallow.

What do you think?

 

It should be good for the moment. Marine Betta is my favorite fish.

 

It should be OK as long as the tank is large enough to house all of the fish and their space needs.

 

Finally someone agrees with me

 

Love the marine betta's wish I could have one.

 

It's a 55 gallon.

 

Should be fine. Eventually, the eel may go for the clown, but just keep him well fed.

 

Add the eel last! After everyone is established and make sure there are plenty of hiding spots for all your fish the eel needs about 4. And make sure he can't fit any of your fish in his mouth. He will eat shrimp first thing mine did was eat my pistol shrimp (and I believe my goby but I didnt witness that one) internet says feed 3-4 times a week. If I don't feed mine everyday he starts looking at the clowns.

 

I know I'm moving the clown to a 30g reef tank.