The Hippocampus severnsi lives in the benthopelagic, marine, depth range 8 - 20 m environment.
species, this Hippocampus severnsi is a close cousin. More
Hippocampus severnsi is distinguished from congeners in having a combination of: extremely small size (height 13 mm, standard length 15 mm); 12 trunk rings; 27 tail rings; reduced ossification of inferior and ventral trunk ridges; 14 dorsal fin rays; 10 pectoral fin rays; More