I have 2 clowns right now in a 10-gallon tank and was thinking of adding a high-fin goby or pistol shrimp. What are your thoughts? And what are some recommendations on stocking? It's also a reef tank, so reef-safe fish or inverts
Personally I wouldn’t add more fish. 2 clowns should be in a 20 gallon, so you already cut the tank size in half. Not enough filtration or territory for another fish. The fish will grow.