Black Seahorse

Black Seahorse

The Black Seahorse is a relatively medium sized seahorse and holds a colouration that ranges from deep black to black/yellow. Additionally, many of these species have been known to hold dark spots or/and bands over its body.

These seahorse can thrive when kept in a social environment when they are housed with a small group or mated with another seahorse.  For this species it is best to house it in an aquarium of at least 40 litres, as a rule of thumb another 40 litres should be added per each additional pair. Additionally, it is also said that it is a wise decision to add a spray bar to the aquarium in order to create a gentle flow whilst eradicating stagnant areas within the tank. It must also be understood that seahorses are quite underdeveloped swimmers, and therefore they actually prefer to take full advantage of their prehensile tails and attach themselves to rock, coral, algae or other decorations. Additionally, it is wise to make sure the aquariums temperature does not exceed 24C because at this level it is a lot less likely that the seahorse will contract vibrio bacterial infections. 

Furthermore, when homing seahorses it is vital that uneaten food and detritus is siphoned out and removed daily. Additionally, both alkalinity and calcium levels will need to be analysed frequently with the goal of maintaining the levels and keeping their bony plates healthy. Seahorse are usually kept in their own aquarium or one set up uniquely for them. However, many have had great success still with keeping them with other peaceful tank mates such as; pipefish, dragonets, small gobies and firefish. Also some corals can be harmful to seahorses, as their stinging tentacles can cause damage and even sometimes consume the seahorse if the corals are big enough. Furthermore, crabs and clams may also cause damage to your seahorse and grab and pinch them if they are housed together. 

It is important to only have seahorses housed with fish that will have the same eating patterns as them and not be aggressive and quick eaters and leave the seahorses with nothing to feed on. Seahorses will feed well on many frozen meats, however most aquarists say that mysis shrimp is always their favourite to eat. It is also a good idea to add foods such as amphipods and other small crustaceans to the tank in addition to what is already found on the live rock. Lastly, as a rule of thumb it is said that seahorses do best when fed twice per day. 

Minimum Tank Size40 Litres
Care Level: Moderate
Temperament: Peaceful
Reef Compatible: Yes
Water Conditions: 72-78° F, dKH 8-12, pH 8.1-8.4, sg 1.020-1.025
Max. Size: 6"
Colour Form: Black, Clear, Tan, Yellow
Diet: Carnivore
Family: Syngnathidae
Origin: Captive-Bred

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Easy to Care For
Easy to Feed
Peaceful with Others
Reef Safe
Invertebrate Safe

  1. I love my pair of black seahorses that I got from Maidenhead Aquatics for £90. Can be a little hard at first getting them comfortable, but once they are settled its all easy.

  2. I have kept 4 “captive bred” seahorse in the past (probably net pen raised) H. Kellogi (many think cross breed). All of the coral in my tank is seahorse safe with the exception of the meat coral. Even with a filter, PS and a tank FULL of macros, frequent water changes were required to keep stable tank params. Ponies are messy eaters! These horses ate frozen mysis shrimp and bred in the tank. I was unsuccessful raising fry. Unfortunately, I left town for a weekend and a warm spell increased tank temps to 80 while I was away. All four seahorses developed disease (probably vibro) within a week and died despite QT tank and medication.

    If I ever keep seahorses again it will certainly be with an aid of a chiller.

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