Hippocampus fisheriis commonly referred to as Fisher's seahorse. Difficulty in the aquarium: Solo per acquariofili esperti. A aquarium size of at least 100 Liter is recommended. Toxicity: Toxic hazard unknown.
The offspring of Hippocampus fisheri are possible. Unfortunately, the number of offspring is not large enough to cover the demand of the trade. If you are interested in Hippocampus fisheri, please ask your dealer for offspring. If you already own Hippocampus fisheri, try breeding yourself. This will help to improve the availability of offspring in the trade and to conserve natural stocks.
Jordan & Evermann, 1903
Very special thanks for the first three photos of Hippocampus fisheri to Stephen Van Kampen-Lewis!
These seahorses are often caught by accident by squid fishermen far off the coast of Hawaii. The seahorses are attracted by lights used by the boat to bring in the squid.
However, this species is a deepwater fish that can't be kept in aquariums. In nature, they live in very deep water during the day and then swim to the surface to hunt at night. Without that deepwater habitat, they get gas bubbles in their blood and die. Karen Brittain also told me this phenomenon even happens to seahorses that are born in captivity and never see deep water.
The males are fascinating and they change color from white to red, brown, to orange and everything in between. They court the females in the morning and will "shimmer" with their colors as they change color rapidly to attract the females.