Help me find my last fish for my fluval evo

[Aqua King]

I currently have a Fluval evo 13.5 gal tank and my stocking list includes-

2 ocellaris clownfish

1 yellow clown goby

1 scarlet skunk cleaner shrimp

1 porcelain crab

3 sexy shrimp

Now, I want to add a final fish to my tank and I want it to be-

1. Personable and dog-like

2. Reef safe

3. Easy to care for

 

Thanks for your help! CHEERS!!!