Longsnout seahorse
The longsnout seahorse is a member of the family Syngnathidae, native to the western Atlantic from the Caribbean to Brazil. It lives among seagrass, sponges, and gorgonians in shallow coastal waters. It is slender with a notably long snout and highly variable coloration, ranging from orange and yellow to red or brown, often with fine speckling; individuals can change color to match surroundings. It is one of the more colorful Atlantic seahorses. It is peaceful and delicate, best kept in a dedicated species aquarium with gentle flow and plenty of hitching posts. It needs frequent feeding of enriched frozen mysis and should not be housed with fast or aggressive tankmates. Males brood young in a pouch and give live birth. Captive-bred specimens adapt best. Suited to advanced aquarists.
Water parameters
| Temperature | 22 – 26 °C |
|---|---|
| pH | 8.1 – 8.4 |
| Carbonate hardness (KH) | 8 – 12 °dKH |
| Salinity | 33 – 35 SG |
Tank & stocking
| Minimum tank volume | 110 L |
|---|---|
| Volume budget per individual | 45 L — adds up with tank-mates |
| Minimum group size | 2 individuals (shoaling) |
“Minimum tank volume” is a reasonable floor, not an absolute limit. The per-individual budget is used by the Aqua app to estimate how heavily a tank is stocked.
Frequently asked questions
What size aquarium does Longsnout seahorse need?
Provide at least 110 litres for a small group to keep Longsnout seahorse in good conditions.
What water parameters does Longsnout seahorse need?
A temperature of 22–26 °C, pH 8.1–8.4, saltwater.
Is Longsnout seahorse peaceful or aggressive?
Its temperament is peaceful.
What does Longsnout seahorse eat?
Its diet: carnivore.
How many Longsnout seahorse should be kept together?
It is a social species: keep a group of at least 2.
How big does Longsnout seahorse get?
Around 17 cm as an adult.
Is Longsnout seahorse suitable for beginners?
Care level: advanced.
Planning a tank with Longsnout seahorse?
AquaTender turns these parameters into live advice: it checks whether your tank is big enough, how heavily it's stocked, and whether your fish are compatible — then tracks water tests, photos and maintenance for you.
Fish from the same biotope
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