Advanced Saltwater Fish Compatibility Guide

Understanding territorial behavior and compatibility is crucial for a peaceful reef tank. Avoid mixing similar-shaped tangs, keep only one dottyback per tank, and never mix clownfish species. This guide covers aggression levels, introduction order (most peaceful first), and quarantine protocols. Key rule: always quarantine new fish for 2-4 weeks using copper treatment or tank transfer method to prevent ich and velvet outbreaks.