Goldline Grouper ~ Sixline Grouper ~ Sixline SoapfishFamily: Serranidae Grammistes sexlineatusPhoto © Animal-World: Courtesy Ignatius Tavares
The Golden-striped Grouper, Grouper, Goldline Grouper, or Sixline Grouper is well known for producing a skin toxin, called grammistin, which dissuades predators. This toxin is given off when the fish is frightened or annoyed.
The photo above shows the adult coloration of the Golden-striped Grouper, Grouper, Goldline Grouper, or Sixline Grouper. The juvenile coloration is quite different. Basically six black and white evenly spaced stripes run horizontally the length of the fish. As it gets older, the white stripes get smaller until they become the dotted pattern and the black becomes lighter until the fish looks like the photo above.
This grouper is well suited to aquarium life since it only get to be about 10 inches (25 cm) long. This is small for a grouper!
For more Information on keeping this fish see:
Guide to a Happy, Healthy Marine Aquarium
Lined Soapfish, Sixline Soapfish (Grammistes sexlineatus) at Gold Coast Seaway
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Video of a juvenile Sixline Soapfish in the wild!
This video is the perfect visual as to why Sixline Soapfish do not play well with others that can fit into their mouths! These fish will eat a fish up to the same length as they are, along with shrimp and crabs. Add them to the tank first, and house with fish that are peaceful or semi-aggressive and larger than they are. They are quite peaceful and do not bother larger fish. The toxin that they carry in their slime coat can be expelled into the water to protect them from other fish. While in the ocean this is not an issue, in a closed system, this can cause death to itself and the rest of the tank. They will not bother corals or starfish and are great in an aggressive reef tank!
Zebra Moray, Soapfish, Stars and Stripes puffer (Golden-Striped Grouper Grammistes sexlineatus)
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Adult Sixline Soapfish or Golden-Striped Grouper in captivity.
This video shows the appropriate tank mates for a Sixline Soapfish. Zebra Morays are oddly peaceful for Morays and are typically not aggressive even to smaller fish! The Sixline Soapfish is not aggressive toward his tank mates and is probably full size, which is 11.7" (30 cm). Keeping a well filtered tank with lots of live rock to hide in will help them adjust. Add soapfish to the main display as the first fish in a community tank of large fish for best results.