Lined Seahorse – Male and Female

(8 customer reviews)


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SKU: 534.7 Category:


Pair Seahorse, Hippocampus erectus.  This listing used to be our male seahorse only but we only get a limited amount of males and we are selling them along with one female seahorse now. These sell by such names as “lined seahorse” and “black giant seahorse”.  They can reach a total length of about 8 inches. Depending on our stock, we send them out starting at 2.5 inches (average would be 4 inches). We guarantee that you will receive a male. It is possible the male might be pregnant.

These are wild caught seahorses and although they have been kept in a medicated system for about two weeks, it’s always a good idea for you to quarantine them for another two weeks prior to adding them to an established system. Seahorses require live foods such as enriched live adult brine shrimp, live mysis shrimp, live grass shrimp, or any other small live fish or shrimp. We try to get them started on eating frozen mysis shrimp. If you have trouble getting them to eat the frozen mysis shrimp, try feeding them enriched live adult brine shrimp or grass shrimp for a few days and then try weaning them off the live food and onto the frozen food. They will not thrive on just live brine shrimp and will eventually waste away unless you are enriching the shrimp right before you feed them to the horses. If necessary, their natural food are grass shrimp.

Seahorses are reef safe to a point.  They generally will not bother other fish or invertebrates, but may go after very small fish or small shrimp.  They are not aggressive feeders, so they require extra care in a tank that has active fish (most people would not recommend mixing them with fish because they are such passive feeders.)    Seahorses should not be put in tanks that have sea anemones, corals, or zoanthids because they can sting the horses and the anemones may even eat them.  Mushroom and leather “corals” are OK, as are gorgonians.
Seahorses are not for the beginners because of their picky feeding requirements, so this shouldn’t be your first fish.
For more information about aquarium requirements, caring for and raising seahorses please visit, a dedicated seahorse forum.

Additional information

Dimensions 1 × 1 × 1 in

8 reviews for Lined Seahorse – Male and Female

  1. lkemja (verified owner)

    2nd time.ordering from KP. Ordered the pair and oh my gosh! They are so beautiful. Both are very healthy and big. Thank you KP! Packaging was great and secured very well. I love them. Will do business again.

  2. michael cullinan

    arrived larger then expected and gave birth while acclimating . great addition to my s/h tank just waiting to see him eat frozen.

  3. Bryan Anderson

    Arrived alive, and already had babies. Have to order more, we just love them!

  4. Gerald Jeffers

    hi bought 5 of these great seahorses from ken last aug. they have already had babys what a great buy these are very healthy started eating frozen food in a week out of my HANDS thanks again they also like to change colour from black to whit to silver to black and orage to a rusty brown thanks ken you are the best

  5. Layton Gangestad

    Got my second batch of horses about a month ago, Again, VERYpleased. If your looking for very nice critters, here they are.
    You can’t go wrong buying fron “Sea Life Inc. Exellent animals (and I’ve got quite a few). My reef/seahorse tank is mainly Sea Life life.
    thanx Ken,

  6. Layton Gangestad

    I ordered 8 of these horses about 3 weeks ago most are already eating frozen mysis and all are eating frozen brine. Exellant quality animals, the horses and the many other critters I’ve gotten from Sea Life Inc.
    Thanx for the exellant animals,

  7. Debbie Dahl

    Bought several of these on ebay. Absolutely beautiful, healthy, and well-cared for. Will be back for more as we develop our seahorse tanks further. Nice people to do business with. Prompt service, care about the customer. Well packaged. Fast delivery and processing. BUY HERE!

  8. James Mace

    I bought a pair on ebay for this guy and they eat on the second day and are very good

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