10 Best Aquarium Fish for Beginners
10 Best Aquarium Fish for Beginners
If you’re getting into freshwater aquariums for the first time, it can be intimidating to know which fish to pick. Ideally, you want something hardy, budget-friendly, and colorful with an interesting personality. Check out our list of top 10 beginner fish (in no particular order) that are easy to care for and would make a great addition to your aquarium!
1. Rasboras
There are many types of rasboras, but our favorite ones are the harlequin rasbora (Trigonostigma heteromorpha) and lambchop rasbora (Trigonostigma espei). Known for their bright orange color and distinctive black triangular patch, these peaceful nano fish only grow to about two inches long and are readily available in most pet stores. Other rasboras include the miniscule neon green rasbora (Microdevario kubotai) and larger scissortail rasbora (Rasbora trilineata). Get a school or six or more of the same rasbora species, and they’ll make a striking display in your community tank. For more information on caring for your rasboras, view our full care guide here.
2. Common
Goldfish
Veterans often warn new fish keepers to stay away from goldfish because they get so large, but they’re still a great beginner pet because they’re very resilient and easy to care for. Common goldfish (Carassius auratus) grow to about 12 to 14 inches, so they require 30 gallons of water per fish (or two goldfish in a 55-gallon aquarium). Many people even put their goldfish in outdoor ponds once they reach their adult size. They love eating spirulina algae, vegetables, Repashy Super Gold, and other foods higher in carbohydrates and lower in protein content. Goldfish are very forgiving with water parameters such as pH and water hardness, but they do require lots of water changes to keep their tank clean. A single-species aquarium is preferred since they will try to eat any animals (and plants) that fit in their mouths.
3. Tetras
Like rasboras, tetras are another very popular, small
schooling fish that come in tons of varieties – like neon tetras (Paracheirodon
innesi), cardinal tetras (Paracheirodon axelrodi), black neon tetras (Hyphessobrycon
herbertaxelrodi), and Congo tetras (Phenacogrammus interruptus). They’re pretty
easy to care for and prefer neutral pH waters from 7.0 to 7.8 (usually on the
higher side for African tetras and lower for wild-caught South American
tetras). As with most schooling fish, keep them in groups of six or more
because they enjoy safety in numbers. Tetras go very well with rasboras and
other community fish on this list. More information can be found in our neontetra and cardinal tetra guide.
4. Corydoras
Cory catfish are peaceful schooling fish, much like rasboras
and tetras, but they dwell at the bottom of the aquarium. Growing to one to
three inches in length, they love scavenging around the tank floor and looking
for crumbs, but you must specifically feed them a variety of sinking foods to
make sure they get enough nutrition.
Over 160 species have been identified so far, but the most popular species include the bronze and albino cory (Corydoras aeneus), panda cory (Corydoras panda), and emerald green cory (Corydoras splendens). Keep them in a group of at least three to six of the same species to best enjoy their silly antics. Find out more by reading our cory catfish care guide.
5. Platies
These 3-inch livebearers (meaning fish that bear live young)
are especially robust, even more so than guppies. They can handle a wide range
of pH from 7.0 and higher and tend to prefer harder waters. Plus, platies are
voracious eaters and will eat nearly any omnivore community food you throw at
them. Our favorite type is the variatus platy (Xiphophorus variatus), so make
sure to check them out!
6. Betta Fish
Betta fish are the king of beginner fish because of their
vivid coloration, small size, and simple care requirements. They can be kept by
themselves in a 5-gallon aquarium with a gentle filter or with a community of
other fish in a 10-gallon tank or larger. (Don’t keep them with other betta
fish because their nickname is “Siamese fighting fish” for a reason.) Suitable
tank mates include tetras, corydoras, and other peaceful creatures, but avoid
any fish that may nip their beautiful fins. As meat eaters, they like bettapellets, frozen bloodworms, and other small floating foods. Find out how to setup a beautiful betta fish tank by reading our guide.
7. Barbs
Barbs make a lively, action-packed addition to your community
tank. Growing to three to four inches (and larger), the most popular varieties
include tiger barbs (Puntigrus tetrazona), Odessa barbs (Pethia padamya), and
cherry barbs (Puntius titteya). Some species are considered semi-aggressive, so
we recommend buying six or more to reduce fin nipping. Good tank mates include
rasboras, tetras, and corydoras, but stay away from long-finned fish like
angelfish and betta fish.
8. Bolivian Cichlids
The Bolivian ram (Mikrogeophagus altispinosus) is an
excellent beginner cichlid from South America that’s very similar to their
colorful but less hardy cousins, the German ram. Running at three inches long,
they make a great centerpiece fish for a medium-sized community aquarium
because of their unique cichlid behavior, yellow and black coloration, and ease
of breeding. Bolivian rams appreciate pH of 7.0 to 8.0 and temperatures around
72 to 79°F, and they can be kept with nearly any community fish that matches
these same requirements.
9. Kuhli Loaches
Kuhli loaches (Pangio kuhlii) will either fascinate or freak
you out because they look like little 4-inch eels or snakes. As nocturnal fish,
they tend to be a little shy and hide behind decor, so keep them groups of at
least three to six so that they feel safe enough to come out and explore. Like
corydoras, these bottom dwellers scavenge for leftovers on the ground and
between rocks, but you must specifically feed them to make sure they don't go
hungry. Read more about them in our kuhli loach care guide.
10. Angelfish
With their beautiful shape, distinctive fins, and lovely striped pattern, the striking angelfish certainly lives up to its name. Since they can grow to the size of a small saucer, keep them in 55 or more gallons of water (especially in vertically tall tanks). This large showpiece cichlid does well with rasboras, tetras, and other community fish, but it’s best to just keep one to avoid territorial fighting among their own species. Common varieties include marble, zebra, koi, and veil angelfish.
All of these beginner fish are hardy, easy to care for, and readily available at your local fish store, so have fun researching your next fish and deciding which one is best for you!
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