Read carfully to determine if you have true spikes, or not!



This seahorse is H. guttulatus. Please note that the spikes on the head of this horse are part of its body, actually boney protrustions, called spikes. H. abdominals has this feature also, but only on the crown. Cerri, show below, are NOT part of the horses' extoskeleton, but are instead"skin". If the horses' spikes fold up or bend when when touched, or flow with the current of the tank, then the horse is not a H. guttulats, but instead an H. erectus, as shown here BELOW the H. guttulatus link.
H. guttulatus

 

This is Cerri on an H. erectus. The cerri are more often seen on younger horses, as a means of camoflouge.

 

This is the same H. erectus as above, but show from the back view. If you will look close you will see the cerri sticking off of the sides of the horse.