Skip to main content
  1. Home
  2. Other animals
  3. Evergreens

5 amazing non-fish aquarium pets you should add to your tank

Add as a preferred source on Google

Fish definitely win as arguably the best aquarium pets to have if you’re looking for something easy to take care of. Still, some pet owners are looking for something more challenging than neon tetras. Fortunately, an aquarium can house a number of interesting and even cute creatures, either to complete your tank or on their own. When you’re searching for a different kinds of tank animals, consider adding one of these five creatures to your aquarium.

Seahorse swimming in his aquarium
Waldemar Brandt / Unsplash

Aquarium pets

Sea horse

Okay, the sea horse is technically a fish, but he makes for a very different-looking and really fun pet. Because of their gentle nature, it can be tricky to add these funny guys to an existing tank. They won’t do well with a more aggressive fish like tangs, for example. However, these display-worthy animals can thrive in a tank on their own or with a group of small gobies. Sea horses prefer vertical tanks, which allow them to swim up and down, grasping onto perches as they go. To satisfy this pet, you need a number of “hitching posts” for them to latch onto. We recommend placing this tank in a well-lit, central spot for viewers to watch these cuties swim casually in their home.

Recommended Videos

Aquatic frog

Because we think of frogs as the antithesis of a handsome prince, it’s hard to picture how they might be seen as cute. But these tiny swimmers will certainly warm your heart. Unlike some of these other animals, the aquatic frog works well with many types of fish and can be added seamlessly to an aquarium. In fact, they’re one of the few animals who will get along with more solitary creatures such as bettas. Of course, you need to carefully introduce any new inhabitant to your tank, but this amphibian might get along better than others. Your housing probably already has his basic necessities on hand, though frogs require special sinking food and sometimes more powerful filters.

Freshwater crab in the aquarium
Manseok Kim/Pixabay.com

Freshwater crab

You’ll have to be extra careful if you want to house crabs, as their pinchers can pose a menace to you and their tankmates. Some small fish may also look like a meal to these omnivores, and you certainly don’t want to house crabs with any fish above them on the food chain, either. However, crabs can make a great addition to the right tank or can live together with some of their own, provided there’s enough room. One of the most important things to think about when setting this up is how to keep your crab in. These climbers make great escape artists and will happily leave the tank if given the chance. Check carefully when you put your aquarium together and after every feeding that the lid seals firmly behind you. To satisfy her climbing spirit, you’ll want to keep a few perches above the waterline and many more below it. Rocks, plants, wood, and accessories create great places for crabs to explore and give them a place to hide if they’re not in the mood to be on display.

Aquarium snails

We’re not talking about the snails you might find in the garden — some species live their whole lives underwater. While these little critters won’t go well with those crabs who might see them as dinner, they cohabitate nicely with many freshwater fish. Plus, they enjoy eating leftovers and will happily munch on extra food and algae. Like your freshwater crab, though, these slowpokes climb, or slide really, and will make a break for the open air if given the chance. Along those lines, you may want to take them out for a gentle cleaning every so often (shell only; the soft body is acutely sensitive). And you need to make sure you have extra calcium in the water so they can grow their personal house.

Cherry shrimp on bottom of aquarium
uzilday / Pixabay.com

Shrimp

You’ll never get bored with shrimp in your tank. More than other non-fish tank dwellers, they love to move around and enjoy their environment. Feel free to sit back and enjoy “shrimp TV” whenever you find them in a particularly playful mood. Best of all, they will clean up your tank like it’s their job (it kind of is). Many shrimp snack on algae and other microbes in the water, helping to keep the tank fresh and well balanced. As with other non-fish aquarium dwellers, you will probably opt to keep these guys on their own. Be especially careful of mixing with big fish, or your little pal will become someone else’s dinner. However, they mix well with some smaller fish like guppies or certain breeds of catfish.

While many of these unusual pets make a great addition to your tank setup, they don’t always get along with fish. We recommend most aquarists keep their species at least mostly separate. But having one more tank just adds to your theme. Especially for pros, branching out into non-fish aquarium pets completes your home aquariums and ups your underwater game.

Rebekkah Adams
Former Contributor
Rebekkah’s been a writer and editor for more than 10 years, both in print and digital. In addition to writing about pets…
How to reduce nitrates in your aquarium quickly and effectively
Get the nitrates under control for your fish
Clown fish swimming through corals in an aquarium

It’s one more thing to add to the seemingly endless aquarium checklist, but you need to stay on top of your nitrate levels. You’ll never get them to zero (though if you do, let us in on the secret), but keeping the aquarium chemicals in balance will greatly increase your fish’s life span. While not quite as dangerous as ammonia, out-of-control nitrates can kill fish. Proper testing, cleaning, and filtering will enable you to reduce nitrates and keep your fish healthy. Keep reading for more tips on how to reduce nitrates in aquariums.

Read more
How to help a bird with a broken wing
Do these 4 things right away if you find an injured bird
Vet examines a falcon's wing

It’s hard to know when to get involved in the natural order of things, and many times, you’ll want to leave Mother Earth alone and let the ecosystem balance itself. But occasionally, the opportunity to step in and make a difference really does come along. If ever you stumble on an injured bird with a broken wing, you may be able to save them without harming nature in the process.

Before you ponder how to help a poor flyer, make sure the bird is actually hurt. Some animals fake injury to lead you away from a nest. If you’re certain the avian needs help, it’s time to spring into action. Here's how to help a bird with a broken wing.

Read more
The 7 most intelligent birds you can keep as pets
These species can all learn to talk or sing to keep you company
Blue macaw looking quizzically into the camera

Birds are actually one of the most intelligent creatures and have the unique skill of mimicking the human voice. Of course, most of this is just repeating back things they've heard, but they can also learn basic commands and even understand some concepts.

If you're looking for the smartest birds, you will probably want to stick with members of the parrot family. Although many other species are quite smart, like ravens, they don't all make good pets. By choosing from this list, you can bring home a bird to play with that's friendly to humans and intelligent.
What is the smartest bird?

Read more