New Nano tank - need some advice

[Salty_Dawg]

Hey guys, recently decided stepped up from tropical to marine fish keeping (big boy fish keeping as a friend calls it) and have purchased a fluval m50 (54litres - 15gallons). Was wondering if it would be ok to keep

Watchman shrimp pair.
clown goby or a small blenny such as a tail spot (blennys other than sailfin/jewel are hard to find in scotland).
several small hermits and snails.
Also considering a cleaner or peppershrimp but don't know how they will get along with the pistol.

Is this to much?

[fort384]

A watchman/shrimp pair is probably pushing it for a 15 gallon tank.

I'd pick 1 of either the watchman pair or blenny or clown goby, with some small hermits and snails. Some would probably say don't even put the watchman goby into a 30 gal tank.

[BigRedsReefs10]

You can do a hi fin red banded goby and pistol with a clown goby in a 15. I love my hi fin, very hardy little guy