Six-Line Soapfish
The Six-Line Soapfish (also sold as the Goldenstriped or Golden Stripe Soapfish) is a dark brown, secretive nocturnal hunter marked with pale yellow stripes, hiding under ledges by day and coming out to hunt small fish and crustaceans after dark. It carries a serious hidden risk: when stressed, injured or dying it can release a toxic skin mucus called grammistin that is potent enough to kill every other fish in the tank, so calm handling, a gentle acclimation and never adding shipping water to the display are essential. Reef-safe toward coral tissue but not toward small fish or ornamental shrimp, it belongs only in a stable, established fish-only system.
Tankmates
How Six-Line Soapfish gets on with the rest of the reef, checked pair by pair by the same engine as the live pre-flight.
Best kept apart
A real clash — aggression, predation or a same-genus fight.
Keep an eye on these
Usually fine, but worth watching in a smaller tank.
Good tankmates
No conflicts — a few popular ones to start with.
