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Taxonomy:

Big-belly seahorse, Hippocampus abdominalis

Hippocampus alatus (Add)
Hippocampus algiricus (Add)
Hippocampus angustus (Add)
Hippocampus barbouri (Add)
Pygmy seahorse, Hippocampus bargibanti (Add)
Hippocampus biocellatus (Add)
Hippocampus borboniensis (Add)
Hippocampus breviceps (Add)
Hippocampus camelopardalis (Add)
Hippocampus capensis (Add)
Hippocampus colemani (Add)
Hippocampus comes (Add)
Hippocampus coronatus (Add)
Hippocampus curvicuspis (Add)
Hippocampus denise (Add)
Hippocampus erectus (Add)
Hippocampus fisheri (Add)
Hippocampus fuscus (Add)
Hippocampus grandiceps (Add)
Hippocampus guttulatus (Add)
Hippocampus hendriki (Add)
Hippocampus hippocampus (Add)
Hippocampus histrix (Add)
Hippocampus ingens (Add)
Hippocampus jayakari (Add)
Hippocampus jugumus (Add)
Hippocampus kelloggi (Add)
Hippocampus kuda (Add)
Hippocampus lichtensteinii (Add)
Hippocampus minotaur (Add)
Hippocampus mohnikei (Add)
Hippocampus montebelloensis (Add)
Hippocampus multispinus (Add)
Hippocampus paradoxus (Add)
Hippocampus pontohi (Add)
Hippocampus procerus (Add)
Hippocampus pusillus (Add)
Hippocampus queenslandicus (Add)
Hippocampus ramulosus (Add)
Hippocampus reidi

Hippocampus satomiae (Add)
Hippocampus semispinosus (Add)
Hippocampus severnsi (Add)
Hippocampus sindonis (Add)
Hippocampus spinosissimus (Add)
Hippocampus subelongatus (Add)
Hippocampus trimaculatus (Add)
Hippocampus whitei (Add)
Hippocampus zebra (Add)
Hippocampus zosterae (Add)