Skip to main content
  1. Home
  2. Other animals

Before getting seahorses, here’s what you need to know

Rebekkah Adams
By

Interested in a saltwater aquarium but not looking to raise a Nemo? Seahorses make a great aquatic pet for anyone who wants to try something different. These tiny and majestic creatures actually belong to the fish family, but you’ll surely notice they don’t resemble the usual pet swimmer. With a head shaped like a horse’s, a small pouch for their young, and a prehensile tail, they could potentially be known as sea monkeys or sea koalas. While you’ll certainly enjoy watching your new seahorses swim gracefully in their tank, these guys can be a bit finicky and need a vigilant owner to consistently keep their aquarium at the perfect temperature with high water quality. Here’s how to make sure your new sea-koala-monkey-horse stays happy.

Three seahorses swimming in an aquarium
David Clode / Unsplash

Should you get a seahorse?

Seahorses come in more than 40 species but only a few that we can keep as pets. The setup for their habitat will be extremely similar to other saltwater tanks, and aquarium pros will enjoy branching out into this different type of fish. Let’s face it, the big appeal of seahorses is the mega cuteness and the fun you get watching them. In addition to the usual tank setup, you’ll need a hitching post for your new pet to wrap his fingerlike tail around. For extra fun, install a plant instead that he can catch onto. On the flip side, you have to be extremely careful that he won’t accidentally catch on any other part of the tank like a piece of your filtration system. Because seahorses in aquariums can live up to five years, you’ll need to ensure you’re ready for the commitment. 

Seahorses hitches to a plant
Dylan McLeod / Unsplash

What type of aquarium do you need?

Your pet seahorse requires a unique environment, which is why we don’t recommend housing him with a large group of other fish or with most corals. These placid animals like to keep things chill and won’t do well in a tank with an overactive filter. Of course, you still need to clean the water, but get a filter that lets you adjust as needed. You might also have more luck with a hanging filter, rather than a submersible one. For a pair of seahorses, you should look for a 20- to 30-gallon tank at minimum. They thrive in a low-temperature (for a tropical fish, that is) and high-pH environment, so ensure your tank is below 75 degrees and just above 8.0 pH value. Many owners select a vertical tank, as your seahorse couple will enjoy swimming up from post to post. If you get a male and female, prepare for the inevitable offspring. A same-sex pair will get along fine. 

Recommended Videos

You’ll need to think carefully before adding other species to your seahorse aquarium. Any fish with an aggressive side will be too much for these timid critters. Even though seahorses can’t live with just anyone, there are a couple of other aquatic animals that will befriend a seahorse. Look for peaceful fish, like gobies, to be their tankmates. Any time you add fish, you must adjust the size and filter for your new school. Plan carefully to avoid overcrowding, which can quickly create a hazardous environment in the aquarium. 

How should you feed a seahorse?

Unlike many other fish, seahorses won’t eat pellets or flakes happily. They much prefer to catch their prey, though frozen will work for most of these pets. You’ll have to figure out a good system since food preference can vary depending on the species and temperament of your animal. He’ll probably enjoy very tiny crustaceans like shrimp, and will likely want to eat multiple times per day. Feeding once per day almost never satiates this fish, so be mindful about maintaining a schedule. Sprinkle in weekly treats, such as different types of shrimp that aren’t his usual diet. You may also need to supplement with vitamins that can be added to food to keep your seahorse healthy. 

Remember to always research your local pet or aquarium store before heading in or find a reputable online breeder. Ask where they get their seahorses to ensure they’ve been captive-bred and are not wild-caught. Check his eyes for clarity and give his little tail a good look. If he’s hitching properly, swimming lazily, and eating excitedly, you’re looking at a happy seahorse.

Editors' Recommendations

Rebekkah Adams
Rebekkah Adams
Contributor
Rebekkah’s been a writer and editor for more than 10 years, both in print and digital. In addition to writing about pets…
Is my rabbit pregnant? 5 telltale signs you should know
Look for these signs to confirm your rabbit will soon have babies
Baby rabbit being held by owner

What's better than one pet rabbit? An entire litter of bunnies (as long as you're prepared for them, of course). If you've been wondering, "Is my rabbit pregnant?" now is the time to find out for sure. After all, you don't want to be caught unaware and suddenly have a whole new colony of animals in your hutch.

Sometimes, lady bunnies can take on the behaviors of expectant mamas, but it's actually a false pregnancy. The best way to find out if your rabbit is pregnant is to take her to the vet and have them confirm it. However, when you're figuring it out yourself, you should look for the signs that a rabbit is pregnant. If you spot these behaviors, be sure to call your animal doctor.

Read more
What you need to know about sugar gliders before you get an exotic pet
Follow these steps to set your sugar glider up for success
Sugar glider clings to their owner's thumb

Choosing a small pet involves almost as much deliberation as selecting a breed of dog. While there are a lot of factors to take into account, a sugar glider might turn out to be the perfect fit with their curious personality, attachment to your family, and fondness for pockets.

Like any exotic pet, gliders require expert care plus some dedicated research to choose the right breeder or pet store. But with the right prep, your new mammal will fit in perfectly and bond with the whole family. Keep reading to find out if sugar gliders are good pets.
What are sugar gliders?
Unlike most little pets, sugar gliders aren't rodents but marsupials. This gives you a few distinct advantages, as they behave differently from hamsters, guinea pigs, or gerbils. For starters, these are highly social creatures and they will bond with every member of the family and even other pets in the house. Because gliders don't smell like the animals your cats and dogs like to chase — rats, gophers, and bunnies, to name a few — many bigger pets can get along with your new friend. You'll need to introduce them carefully, but they can form lifelong attachments to each other.

Read more
Are female betta fish worth it? Here’s why you should consider getting one of these pretty fish
Unlike males, female betta fish can live together, and get along with other fish, too
A blue female betta in a tank

Betta fish (also known as Siamese fighting fish) rocketed to fame and took a spot as one of our favorite swimming pets for their beautiful color and elegant fins. They, too, are recognized for being aggressive toward each other and will even flare (a display) to you, their owner. However, many of those characteristics only apply to the males of the species, whereas the female versions look and act a little differently. Here's why you should consider bringing one of these lady bettas home.

What are betta fish?
These underwater beauties come from Thailand and live in rice paddies in the wild. It's a myth that they only need a small tank, but bettas often do make great solitary pets that can thrive in an aquarium by themselves. They can also live with many other fish, just not other bettas. One fun thing about these swimmers is that they learn to recognize their owners and will get excited when you come to feed them every night.
How do female bettas differ from males?
You probably know that you can't keep male bettas with others of their kind, as they will fight males and sometimes aggressively mate with females (we recommend only experts breed them). Female bettas won't likely be building any bubble nests though, as that's a job for the males.

Read more