Jawfish are mouthbrooders - the male carries the eggs in its mouth until they hatch. This bright-yellow fish is also known as a surgeon or doctor fish because of two scalpel sharp scales near the base of its tail. The tangs use these scales when sparring with each other. They pop the scales out perpendicular from their body and try to cut their rivals by backing into them. Invertebrates Anemone There are more than 1,000 species.
Anemones are similar to corals in that they both have polyps that are used for obtaining food.
But unlike corals, anemones can detach from the reef. They use a sucker disk at the base of their body to slide along the reef bottom. Brain Coral Some varieties look like tissue from a human brain. When diving on reefs, divers must be careful not to bump their fragile exteriors. Cassiopeia Jellyfish Unlike most jellyfish, the Cassiopeia jellyfish spend most of their time upside down on the lagoon or mangrove floor.