Other species pages:

H. abdominalis
H. algiricus
H. angustus
H. barbouri
H. bargibanti
H. borboniensis
H. breviceps
H. camelopardalis
H. capensis
H. colemani
H. comes
H. coronatus
H. denise
H. erectus
H. fisheri
H. fuscus
H. guttulatus
H. hippocampus
H. histrix
H. ingens
H. jayakari
H. kelloggi
H. kuda
H. lichtensteinii
H. minotauri
H. mohnikei
H. procerus
H. reidi
H. sindonis
H. spinosissimus
H. subelongatus
H. trimaculatus
H. tuberculatus
H. whitei
H. zebra
H. zosterae

This is the only reference I have been able to find for this new species.  Information from:
 www.nevillecoleman.com.au/aboutnev.html

Coleman's Pygmy Seahorse
Hippocampus colemani
Kuiter, 2003 (22mm)

Visiting Lord Howe Island on photographic fauna surveys for 35 years it was not until December 2001 that this beautiful little seahorse was discovered in the lagoon in only three metres of water, eight metres from the dive site mooring. It demonstrates just how much we miss. This site has been dived by thousands of divers over 25 years yet the pygmy seahorse remained undiscovered