Category: Freshwater

Leporinus

Leporinus is a diverse genus of South American freshwater fish known for streamlined bodies, bold patterns, powerful swimming, and the distinctive behavior associated with the headstander family, Anostomidae. Some species feature dramatic black-and-yellow bands, while others display spots, stripes, or more subdued coloration. The best-known aquarium species is the Banded Leporinus (Leporinus fasciatus), an eye-catching …

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Black Skirt Tetra

The Black Skirt Tetra (Gymnocorymbus ternetzi) is a hardy, active freshwater fish known for its silvery body, two bold vertical black bands, and oversized dark anal fin that resembles a flowing skirt. Also called the Black Tetra or Black Widow Tetra, this South American species has been a staple of community aquariums for generations. Black …

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Upside-Down Catfish

The Upside-Down Catfish (Synodontis nigriventris) is one of the most unusual freshwater aquarium fish, famous for spending much of its time swimming with its belly facing upward. Rather than being a sign of illness or distress, this inverted swimming style is completely normal for the species and helps it forage along the undersides of branches, …

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Rummy Nose Tetra

The Rummy Nose Tetra is one of the most distinctive schooling fish in the freshwater aquarium hobby. With a brilliant red face, silvery body, and boldly striped black-and-white tail, these small South American tetras are instantly recognizable—and a large school moving together through a planted aquarium can be spectacular. There is one complication behind the …

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Celestial Pearl Danio

The Celestial Pearl Danio (Danio margaritatus) is a tiny freshwater fish with an appearance far more dramatic than its size suggests. A dark blue body scattered with pearly spots, vivid orange-red fins, and delicate black markings make this species look like a miniature constellation swimming through a planted aquarium. Also commonly called the Galaxy Rasbora, …

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Siamese Algae Eater

The Siamese Algae Eater is one of the most useful—and most active—algae-grazing fish available to freshwater aquarists. With its streamlined silver-brown body, bold black stripe, and constantly searching mouth, this Southeast Asian fish has earned a reputation for tackling troublesome algae while fitting comfortably into many larger community aquariums. Often abbreviated SAE, the Siamese Algae …

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Pygmy Corydoras

The Pygmy Corydoras is a tiny, peaceful freshwater catfish that brings an unusual mix of bottom-foraging behavior and midwater schooling to the aquarium. Barely an inch long when fully grown, these miniature corys are ideal for planted nano tanks and peaceful community aquariums. For decades, the species was widely known as Corydoras pygmaeus. Following a …

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Cherry Barb

The Cherry Barb is a small, colorful freshwater fish known for its peaceful temperament, rich red coloration, and easygoing care requirements. Unlike some of the more boisterous members of the barb family, Cherry Barbs are generally gentle community fish that work beautifully in planted aquariums. Native to Sri Lanka, these fish thrive when kept in …

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Ram Cichlid

The Ram Cichlid is a small but spectacular freshwater cichlid prized for its shimmering blue markings, golden body, dark facial stripes, and surprisingly big personality. Also known as the German Blue Ram, Blue Ram, Butterfly Cichlid, or Ramirez’s Dwarf Cichlid, this South American species has become one of the most recognizable dwarf cichlids in the …

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Clown Pleco

The Clown Pleco is a small, beautifully patterned freshwater catfish that offers the classic armored-pleco appearance without the enormous adult size of many better-known plecostomus species. Its dark brown body is decorated with pale yellow, cream, or orange bands, giving each fish a distinctive striped appearance. Scientifically known as Panaqolus maccus, the Clown Pleco is …

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