Top 5 Oddball Fish for a 40-Gallon Aquarium If you’re looking for something rare or unusual, oddball species are a great way to spice up your fish tank. Specifically, the 40-gallon breeder aquarium is very versatile and really opens up the world to medium-sized animals. Learn about 5 fantastical aquatic pets that are sure to make you stop and stare. 1. Humphead Glassfish Parambassis pulcinella The humphead glassfish is a bizarre sight to behold. Imagine a 3- to 4-inch (8–10 cm) schooling fish with big, googly eyes and a translucent nu...

Care Guide for Cardinal Tetras — Gorgeous Cousin of the Neon Tetra Most people have heard of the neon tetra — an extremely popular, little fish that displays a pair of blue and red horizontal stripes. However, many veteran fishkeepers often prefer its more colorful, higher-priced cousin, the cardinal tetra. Imagine watching an entire school of these colorful jewels swimming back and forth in the midst of a forest of lush, green plants. Find out what it takes to keep this gorgeous species and why they’re totally worth saving up for. Female cardinal tetra Wha...

How to Share 1 Air Pump with Multiple Aquariums As you may know, we are big proponents of using sponge filters in all of our aquariums, but what happens if you have multiple tanks running sponge filters? Is there any way to save money (and improve cable management) by only using one air pump to run all the filtration? It depends on how many tanks need air and how strong your air pump is, so here are some different configurations to try: 2 tanks next to each other can share a dual-outlet air pump. If you only have a single-outlet air pump,...

Care Guide for Amano Shrimp — Nature’s Amazing Algae Eater Algae can become a natural problem in any aquarium. If you have the wrong amount of light and nutrients, this unsightly issue can quickly take over in no time. While there are many methods for getting algae under control, having an algae eater in the tank is one of the easiest, safest, and most efficient approaches. The father of modern aquascaping, Takashi Amano, was fond of using an army of these little Japanese shrimp to keep his planted tanks nice and clean, which is why they are now know...

How to Breed and Raise Egg-Scattering Fish in Your Aquarium Breeding aquarium fish is a huge passion of ours, but the difficulty level can really vary depending on their method of reproduction. Some species are easy to procreate because the parents fiercely defend their offspring from would-be predators or the adults give birth to live young that can immediately flee. Other species like rainbowfish and killifish are willing to lay eggs in spawning mops, which are easy to remove and save from being eaten. However, one of the hardest types to breed are ...

Care Guide for Zebra and Leopard Danios – Energetic Little Speedsters Besides betta fish and guppies, one of the most popular beginner fish in the freshwater aquarium hobby is the zebra danio. They’re known for their eye-popping stripes, cheap cost, and adaptability to a wide range of water parameters. Plus, they are commonly used in science experiments (e.g., genetics, environmental studies, and medical research) because of their relative ease of breeding. Find out why this speedy schooling fish is so fun to keep and how to care for them in your home aquarium....

5 Amazing Wild Betta Species that You Should Try Breeding Everyone has heard of Betta splendens, the colorful, flowy-finned betta fish you see in pet stores. But did you know there are several other species in the Betta genus that can be kept in home aquariums? As with B. splendens, most of them come from the vegetation-filled swamps and marshes of tropical countries in Southeast Asia. Because of the low oxygen levels in stagnant waters, these anabantoids have a special labyrinth organ that allows them to swim up to the water surface to gulp air. Th...

Top 10 Rasboras for Your Next Community Aquarium Looking for the perfect schooling fish? Most people tend to think of tetras and danios, but don’t forget about the breathtaking world of rasboras. They look similar with their torpedo-shaped bodies and peaceful personalities, but most species are found in Southeast Asia and come in a wide array of unique colors and patterns. The common name “rasbora” actually refers to several genera of fish, including Rasbora, Boraras, Trigonostigma, Microdevario, and many more. Let’s talk about 10 different...

5 Easy Tips to Save Time in the Fishkeeping Hobby We all love the thought of relaxing in front of our aquariums, staring at our beautiful fish peacefully swimming back and forth amidst an underwater forest of aquatic plants. However, keeping a fish tank looking clean and pristine takes a lot of time, which can end up decreasing our enjoyment of the hobby. Learn about our top 5 time-saving hacks to simplify your aquarium care and maintenance. 1. Use an Automatic Timer Electrical outlet timers are often used for things like Christmas lights, i...

Care Guide for Apistogramma Dwarf Cichlids — Housing, Breeding, & More How would you like to have a small, gorgeous, and inquisitive fish to add to your community tank as a showstopper? Then you need to try the Apistogramma dwarf cichlids, commonly known as “apistos.” What are Apistogramma Cichlids? This genus originates from habitats all over South America and encompasses almost 100 species. The brightly colorful males tend to reach 3–3.5 inches (8–9 cm) and often come with impressive, extended dorsal fins, while females are a bit drabber and stay around 2–2.5 ...

5 Easy Methods for Cooling Aquarium Water During a Heat Wave During the hot weather seasons when heat waves hit, you may struggle to keep your aquarium water cold enough for goldfish, goodeid livebearers, axolotls, and other cool water species. While it is relatively affordable to warm up the water with a heater, it can be much more expensive to buy equipment that reliably cools down the temperature. One simple tool to start with would be some kind of digital thermometer with an alarm that beeps if the water gets too hot (or cold). Then you know when i...

Aquarium Seasoning is Better Than Aquarium Cycling (and Here’s Why) Whenever someone has a fishkeeping problem and asks for help on social media or online forums, people immediately ask if the fish tank is “cycled.” Yes, it’s important to know about the aquarium nitrogen cycle, but just because a tank can process ammonia waste does not necessarily mean it’s a good environment for housing live fish and plants. For example, just because someone has an official college diploma does not mean that he or she is automatically skilled in that field. There are many, m...

Care Guide for American Flagfish — Algae Eater for Unheated Aquariums The American flagfish (or Florida flagfish) is one of the few native fish from the United States that is available in the aquarium trade. Because of their beautiful colors and algae-eating appetite, many fishkeepers keep them as clean-up crew members for their unheated aquariums and outdoor ponds. In fact, we personally use them in our plant-holding tanks at the Aquarium Co-Op fish store and warehouse to keep the leaves free of algae. Learn how to care for, feed, and breed this lively species...

Top 10 Pufferfish You Can Keep in Freshwater and Brackish Aquariums Out of all the oddball fish, we’ve always had a fascination with puffer fish because of their highly intelligent nature, helicopter-like maneuverability, and large, inquisitive eyes. Plus, they have unique defense mechanisms, such as inflating like a living water balloon and carrying the tetrodotoxin poison that discourages would-be predators. (Note to self: do not try to eat a pet puffer.) Most pufferfish are semi-aggressive to aggressive carnivores with ever-growing teeth like a beaver, so ...

Care Guide for Siamese Algae Eaters (SAE) — Housing, Food, and More If you visit our retail store or warehouse, you’ll notice that many of our plant tanks employ the services of the Siamese algae eater (SAE). This hungry animal is always looking for food, which makes it one of the best algae eaters and cleaner fish in the fishkeeping hobby. However, its 6-inch (15 cm) adult size means the SAE more suitable for medium to large aquariums. Learn what it takes to care for this very energetic and effective algae eater. What are Siamese Algae Eaters (SAE)? Crossoch...

Top 10 Livebearer Fish to Try Breeding in Your Next Aquarium Breeding fish is one of our favorite parts of the aquarium hobby because of the immense satisfaction you get from caring for your pets and seeing them produce the next generation of offspring. Most fish lay eggs, which have a much higher likelihood of getting eaten since the eggs have no natural defenses. In contrast, livebearers (or species that give birth to live young) have a reputation for being easier to breed because the newborns are capable of swimming away and hiding from would-be pre...