Killifish, rasboras, corydoras – the usual suspects that won’t hunt your shrimp. But even among these, some individuals are jerks. I cover species profiles, compatibility charts, and what to do when a “peaceful” fish turns predator.
In the aquarium hobby, Apistogramma agassizii is one of the true gems. This tiny yet incredibly colorful fish has captured the hearts of many aquarium enthusiasts. With its unique beauty and distinctive character, it stands out amidst the diverse inhabitants of aquariums. Keeping Apistogramma agassizii
Yunnanilus cruciatus, commonly known as Vietnamese Multi Banded Zebra Loach, is a fascinating freshwater fish species found in the rivers of Southeast Asia. These small loaches are known for their distinctive markings on their bodies, which give them their name. Yunnanilus cruciatus is a fairly
Xiphophorus maculatus, commonly known as the Southern platyfish, thanks to its endurance and bright coloring, is among the most popular aquarium fish. These fish will be an excellent choice even for small tanks. Southern platyfish are small, omnivores, hardy, very easy to care for, and
Trichogaster lalius (Dwarf Gourami), once a popular aquarium fish known for its sparkling color and resistance to poor water quality, has unfortunately lost its hardiness over the past decade due to extensive selective breeding, Asian disease, and poor maintenance in mass production. As a result,
The Goldfish (Carassius auratus) is perhaps the most recognizable and one of the most beloved species of ornamental fish among aquarium enthusiasts. In many ways, the history of fishkeeping began with them back in the 3rd or 4th centuries. Their incredible endurance, low food requirements,
Updated: June 2026 The Kuhli loach (Pangio kuhlii) is not an eel — it’s a true loach from Southeast Asian slow-moving streams. Most people buy one or two, stick them in a bare tank, then complain they never see them. The fix is simple: groups
Xiphophorus pygmaeus, commonly known as the Pygmy Swordtail, earned its name because of its tiny size. In fact, this fish is one of the smallest among all species of swordtails. Keeping Xiphophorus pygmaeus poses some difficulty for beginners because this species is less tolerant of