description Blue Chromis (Chromis cyaneus) Overview
The Blue Chromis is a small saltwater damselfish known for its vibrant cyan coloration. This tropical fish thrives in groups, creating visually appealing schooling displays within aquariums. It’s suitable for beginner reef keepers and those seeking peaceful, colorful additions to larger marine tanks. Maintaining appropriate water parameters and tank size are key to its well-being.
help Blue Chromis (Chromis cyaneus) FAQ
Is the Blue Chromis really Chromis cyaneus?
The accepted scientific name is Chromis cyanea, although older or incorrect listings sometimes use Chromis cyaneus. It is also classified by some modern taxonomic sources as Azurina cyanea.
How is the Caribbean Blue Chromis different from Chromis viridis?
Chromis cyanea comes from the western Atlantic and Caribbean, while Chromis viridis is an Indo-Pacific species. The Caribbean fish is a deeper electric blue, whereas the blue-green reef chromis usually appears turquoise or green under aquarium lighting.
Can Blue Chromis live in a reef aquarium?
Blue Chromis are planktivorous damselfish and are generally considered compatible with corals. They need open water for swimming plus reef structure for shelter, and they can reach roughly 5 inches in the wild.
Will a group of Blue Chromis remain peaceful?
They often shoal in open water, but captive groups can develop a hierarchy and harass weaker individuals. A roomy aquarium, multiple retreats, and several small feedings can reduce competition, but they do not guarantee a permanent school.
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