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Lined Seahorse (Hippocampus erectus)

Find Lined Seahorse across reef-livestock retailers and from fellow hobbyists on ReefDock. Compare sources, check live pricing where available, and review source-tank parameters on Reef-Trak-verified fish listings before you buy.

Lined Seahorse
Photo: (c) Robertson Ross, some rights reserved (CC BY-NC-SA) · cc-by-nc-sa
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Where to buy Lined Seahorse

ReefDock searches the following reef retailers for this fish. Click through to see the live price.

  • Saltwaterfish

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    Search Saltwaterfish
  • Amazon

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    Search Amazon
  • Petco

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    Search Petco

About Lined Seahorse

The Lined Seahorse is a small, upright fish with a prehensile tail and tubular snout. Body color ranges from tan to brown or yellow, often with darker vertical bars or lines along the trunk and tail (hence "Lined"). The body is covered in bony rings and can change color slightly to match surroundings.

Key facts

Origin
Western Atlantic from Nova Scotia and the Gulf of Saint Lawrence south to the Gulf of Mexico and Caribbean. Found in seagrass beds, mangroves, and shallow coastal waters.
Common Health Issues
Starvation, bacterial infections, parasites, gas bubble disease, inability to compete for food with other fish
Min tank size
20 gallons
Aka
Lined Seahorse, Northern Seahorse, Caballito Estriado
Water Parameters
Temperature: 68-78°F pH: 8.1-8.3 Salinity: 1.02-1.025
Family
Syngnathidae
Max Size
7
Feeding Schedule
3-4 times daily
Appearance
The Lined Seahorse is a small, upright fish with a prehensile tail and tubular snout. Body color ranges from tan to brown or yellow, often with darker vertical bars or lines along the trunk and tail (hence "Lined"). The body is covered in bony rings and can change color slightly to match surroundings.
Diet Details
Feed live copepods, amphipods, and mysis shrimp multiple times daily. Seahorses are slow feeders and require abundant live food sources; frozen food is rarely accepted. The tank should have strong populations of natural prey organisms.
Reef safety
Reef Safe
Difficulty Level
Lined Seahorses are challenging and require expert-level care. They demand pristine water quality, frequent feeding of live foods, stable conditions, and a low-flow environment. They are slow swimmers vulnerable to competition and predation.

Looking for a hobbyist seller?

ReefDock's marketplace lets reef-keepers sell fish directly to other reef-keepers with Stripe-secured checkout and live-arrival photo confirmation. Browse current fish listings on ReefDock, or list your own.

Verify the source tank before you buy

ReefDock is the sister app to Reef Trak. Sellers who maintain a Reef Trak tank log can publish source-tank parameters on eligible fish listings — so you can see the conditions a fish was raised in before you buy. Log this fish on Reef Trak.

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