Crown-of-thorns starfish actually four species | Practical Fishkeeping magazine

http://www.practicalfishkeeping.co.uk/pfk/pages/item.php?news=1879 ---
A study published in the latest issue of the journal Biology Letters
has identified the crown-of-thorns starfish (Acanthaster planci), a
species thought to be widely distributed throughout the Indo-Pacific,
to consist of a species complex with as many as four species.

Fiddler Crabs Know How To Bluff | Scientific Blogging

http://www.scientificblogging.com/news_releases/fiddler_crabs_know_how_bluff
--- Dishonesty may be more widespread in the animal kingdom than
previously thought. A team of Australian ecologists has discovered
that some male fiddler crabs "lie" about their fighting ability by
growing claws that look strong and powerful but are in fact weak and
puny.