5 in (12 cm)
Unknown, possibly around 5 years.
10–70 ft (3–20 m)
Blue chromis gather in schools above the reef to feed on small plankton and jellyfish during the day. They hide in reef crevices at night. Territorial males defend egg nests in spring and summer.
Trumpetfish, grouper and snapper.
Did you know?
The scientific name comes from the Greek words chroma, meaning “colored” and kyanos meaning “dark blue.” When put together, it means colored dark blue.