Category: Fish


  • Gouramis are some of the most recognizable freshwater fish in the aquarium hobby. They come in a wide range of sizes, colors, and temperaments — from the tiny sparkling gourami that fits in a nano tank to the giant gourami that demands a tank the size of a small swimming pool.  What they all share…

  • Gouramis are peaceful, colorful freshwater fish that make a wonderful addition to a community aquarium. But getting the group size right matters more than most new fishkeepers expect. Keep too few, and some species become shy or stressed. Keep too many of the wrong kind together, and aggression — especially among males — can turn…

  • If you’ve noticed your gourami swimming on its side, you’re likely worried. This unusual behavior signals that something is wrong with your fish. While it can be alarming to see, the good news is that many cases are treatable when caught early. When a healthy gourami swims, it maintains an upright position with smooth, controlled…

  • Setting up your first aquarium is exciting. You’ve got the tank, the decorations, and maybe you’ve already picked out your fish. But there’s something many new aquarium owners don’t know about until it’s too late: new tank syndrome. This condition kills more fish than almost anything else in the aquarium. The good news? It’s completely…

  • The first time I noticed one of my female guppies looking a bit rounder than usual, I was thrilled and a little nervous. Was she pregnant, or had I just overfed her? I quickly learned that guppies are livebearers, meaning they give birth to live fry instead of laying eggs. Female guppies can get pregnant…

  • Known as “millionfish” for their prolific breeding, guppies are hardy, affordable, and bursting with personality. You’ll find them at Petco, PetSmart, or local U.S. breeders, often in stunning varieties with names like Moscow Blue or Cobra Green.  But to keep a thriving guppy tank, you need to know who’s who. Male and female guppies differ…

  • Male guppies, with their stunning fan-shaped or lyre tails, are especially popular for their vibrant hues—think neon blues, fiery reds, and shimmering greens. But male guppies aren’t just eye candy. They’re social, active, and sometimes a bit territorial.  Keeping too many males together can lead to aggression, stress, and damaged fins. On the other hand,…

  • Guppies (Poecilia reticulata) are a favorite in many fish tanks, and for good reason. These small, colorful fish are hardy, easy to care for, and add a burst of life to any aquarium. Native to South America, guppies have adapted well to the U.S. aquarium conditions. But walking up to your fish tank and seeing…

  • The flame tetra (Hyphessobrycon flammeus), also known as Von Rio tetra or red tetra, is a freshwater fish from the Characidae family comprising the popular neon, emperor, and rainbow tetra. It originates in the Southeast region of Brazil, where they live in shallow rivers and streams. Flame tetras are a great addition to any aquarium;…

  • Ammonia (NH3) is a toxic compound produced in fish tanks from organic waste. Fish excrete ammonia through their gills and waste, causing a buildup. Uneaten food, decaying plants, and dead organisms also contribute.  In a healthy tank, beneficial bacteria convert ammonia into less harmful substances through a process called the nitrogen cycle. But when this…