Help with #s of fish

[Mickali]

I'm currently looking at the fish I want for my first tank. I will (hopefully) have my 75g tank set up as a reef tank. I plan to hook up a 30g sump with a separate, 20g refugium visible in my custom stand to use as an educational tool. I went through and tried to stick with easy to moderate to take care of fish which are reef safe, and this is the list I came up with.

Here's what I came up with:
Long Tentacle Anemone
Ocellaris Clownfish
Sailfin Blenny
Kaudern's Cardinalfish
Longspine Urchin
Lettuce Sea Slug
Royal Gamma Basslet
Yellowhead Jawfish
Exquisite Fairy Wrasse
Neon Blue Goby
Scarlet Cleaner Shrimp

If possible, I'd love to have a snowflake eel. I know this may not be possible, as I have mainly peaceful fish on the above list. I'd also like a starfish, but am not sure if my tank can handle added that to the bio load. The tank will be set in a biology classroom, so I tried to pick some things with symbiotic relationships to show during those parts of the year. I also know the kids would love the uniqueness of an eel and a starfish, and that added diversity would be good for a classification unit. I also did not include the various small inverts that come in the "cleaning crew" kits I have been reading about.


I'm not sure how to judge the numbers of fish in my tank. Any recommendations would be very helpful. One area I really want multiples of is with the clown fish, as I picked the specific anemone and clown fish based on the natural pairings in the wild and would like to be able to show the paired fish in the anemone.

 

[sfin52]

The sea slug I would stay clear of until the tank is producing algea. I would wait for the anemone till the tank is mature. You may want to take a look at the dwarf angels. Loads of movement and great colors. I would add some brittle stars great cuc as well.

A snowflake is possible and they are a pebbled tooth Eel so crustaceans are on the list and so would some smaller fish.