Long-snout Seahorse Orange (Hippocampus reidi)

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Long-snout Seahorse Orange
Hippocampus reidi
Long-snout Seahorse Orange (Hippocampus reidi)
Name Long-snout Seahorse Orange
Name Lat. Hippocampus reidi
Family Pipefishes & Seahorses
Family lat. Syngnathidae
Order Pipefishes & Seahorses
Order lat. Syngnathiformes
Origin Western Atlantic
Habitat Lagoons, seagrass beds
Diet Carnivore
pH 8.1-8.4
Hardness 8-10 °KH
Behavior Peaceful
Keeping Pair, group
Reef Compatible Yes
Care Level Difficult
Life Span 3-5 years
Protection CITES Appendix II; EC Annex B
Metric Units
Size 15 cm
Temperature 23-27 °C
Salinity 33-36 ‰
Aquarium ~ 200 l
US Units
Size 6"
Temperature 73-79 °F
Salinity 1.020-1.025 sg
Aquarium ~ 50 gal

Distribution and habitat

The range of Hippocampus reidi is in the western Atlantic, extending from the Bahamas through the Gulf of Mexico and the Caribbean islands to Brazil, where they live in the shallow waters of bays with soft bottoms on gorgonians and sponges.


They need a well structured aquarium with numerous branching structures to hold on to, such as non-netting corals (e.g. horn corals), seaweed, algae (e.g. Caulerpa), plastic tubes etc. and living stones that act like a biological filter and whose microorganisms serve as additional food for them, as well as sandy areas. Some shaded light and a very weak current is ideal

Only substrates rich in lime and free of heavy metals should be used as substrate. Filters, skimmers and heaters are necessary to ensure water quality, as well as pumps to simulate tides, swells and bottom currents. Lighting must match the species-appropriate day-night rhythm of the animals

Salinity: 33-36 ‰ pH value: 8.1-8.4
Carbonate hardness: 8-10 °KH Nitrate content: 2-8 mg/l
phosphate content: 0.01-0.1 mg/l nitrite content: 0.0-0.05 mg/l

For salinity, an average value should be aimed for, which may only vary slightly by +/- 0.5 ‰. Ammonia and ammonium must not be measurable. Special attention must be paid to constantly good water quality.


In nature they feed mainly on zooplankton. The food supply consists of live food, such as mysis, small shrimps and Artemia, which is also well accepted frozen after acclimatization, and a special food mixture enriched with vitamins for plankton eaters

These slow eaters should be fed small portions several times a day

A regular and varied diet promotes health and increases resistance.

Behaviour and compatibility

They are very calm and peaceful fish and only at spawning time males form small territories. They can be socialized with small, calm fish (e.g. lyrefish, lakelands), which are not food competitors. However, it is better to keep them in a species tank.

Sex dimorphism

Sexually mature males can be clearly identified by their gross pouch.

Reproduction and breeding

Breeding in the aquarium is often successful. After courtship, the female transfers the eggs into the male's brood pocket. After 20-28 days, the larvae hatch and are released from the brood pocket, ending brood care. Rearing the young is difficult. Suitable food for rearing is live phytoplankton and Artemia nauplii.

Species protection

Species protection: WA Appendix II; EU Appendix B. The proof of purchase is the required proof of origin for the animal. Please keep it safe! Your pet store will be happy to provide you with further information!


In their wide distribution area they occur in numerous color variations (yellow, black, orange, dark red, olive, etc.). The water should be sterilized with a UVC-analge, because they are very susceptible to bacterial diseases. If different species are kept together, make sure that the fish match each other in terms of water quality and temperature requirements, as well as their social behavior, and that the setup meets the needs of all species kept together. New fish to be introduced must be acclimated slowly to the water in the aquarium. Further literature can be found in your pet store.


Text: petdata; Image: petdata

Source: KUITER, DEBELIUS (2007): Atlas der Meeresfische: Die Fische an den Küsten der Weltmeere, Kosmos Verlag; ENGELMANN (2005): Zootierhaltung - Tiere in menschlicher Obhut: Fische, Verlag Harri Deutsch

  • Gemäß § 21 Abs. 5 Tierschutzgesetz idgF