1 Damselfish live in ocean waters throughout the world.

2 Damselfish were then raised in a similar set of conditions, and relocated to coral reefs in the wild.

3 Members of one damselfish species use facial patterns of speckles and swooshes to identify the fish species they regularly attack, researchers report in an upcoming issue of Current Biology.

4 Damselfish use the resulting gardens of algae for feeding and producing young.

5 The damselfish Chrysiptera cymatilis is one of 1,060 new species found on or near the island of New Guinea (see map) between 1998 and 2008, according to a new report.

6 Even after damselfish killed off parts of the staghorn colonies, the areas that remained were able to survive.

7 Finally, damselfish learnt to preempt attacks within 1 h of contact with fangblennies.

8 In just 10 years, 33 new fish species have been discovered in the oceans surrounding the island, including the damselfish Chrysiptera cymatilis.

9 Here, a brilliant red sea fan coral spreads behind a golden damselfish in waters off Fiji's Namenalala Island.

10 And it turns out acidic seawater also makes clownfish and damselfish suicidally bold and reckless, according to a study in the Proceedings of the National Academy of Sciences.