The exceptionally clear water of the Raja Ampat mangrove area makes it possible to see this little group of cardinal fish. Did you know that cardinals display fascinating reproductive behaviour known as mouth brooding? This behaviour is mostly exhibited by males, who carry fertilised eggs in their mouths to protect them until they hatch. During this brood care period, which lasts several weeks, the males go without feeding. https://www.mermaid-liveaboards.com/destinations/raja-ampat-liveaboard/