Dwarf Seahorse (Hippocampus zosterae) Care Guide
One of the smallest seahorse species at only 2.5cm. Requires a species-only nano tank with gentle water flow and live food (baby brine shrimp). Males carry the eggs in a brood pouch.
Overview
Hippocampus zosterae is a species in the family Syngnathidae. One of the smallest seahorse species at only 2.5cm. Requires a species-only nano tank with gentle water flow and live food (baby brine shrimp). Males carry the eggs in a brood pouch. Fascinating to observe but demanding to keep due to strict feeding requirements.
Taxonomy
- Family: Syngnathidae
- Genus: Hippocampus
- Scientific name: Hippocampus zosterae
- Origin: Western Atlantic
Habitat
Native to the Gulf of Mexico, the Bahamas and adjacent western Atlantic, where it inhabits shallow seagrass beds (predominantly Syringodium and Thalassia) at depths of 0.3-15 m. The smallest seahorse species; listed as Vulnerable on the IUCN Red List, with populations declining in response to seagrass loss.
Tank requirements
- Minimum tank volume: 20 L
- Temperature: 22-26 °C
- pH: 8.1-8.4
- GH: 8-12 °dGH
- Water flow: low
- Adult size: 2-3 cm
- Lifespan: 1-2 years
- Recommended group size: ≥ 4
- Difficulty: advanced
Diet
Classified as carnivore. Recommended feeding frequency: multiple times daily. In captivity, offer a varied diet appropriate to the species — quality prepared foods supplemented with frozen or live items of suitable size.
Compatibility
- Temperament: peaceful
- Swimming level: middle
- Compatible tank mates: Other Dwarf Seahorses, Snails
- Avoid with: All Fish, Crabs, Shrimp, Strong Flow
Reef compatibility
Generally classified as reef-safe with caution: may opportunistically pick at small ornamental shrimps, sessile invertebrates or, in some individuals, polyps. Suitability depends on the specific reef stock.
Breeding
- Breeding strategy: pouch-brooder (male carries eggs)
- Breeding difficulty: intermediate