Learn About Fish in the Red Sea Reefs 🔴🌊🪸: There are more than 1,000 different species of fish that have been identified within this body of water. These colorful creatures rely on corals to raise their juvenile fish to adulthood. The Red Sea ecosystem houses one of the longest continuously living reefs in the world. Scientists note that the hard coral species found in the northernmost portion of the sea that extends into the Gulf of Aqaba have an especially high tolerance for rapidly warming