Lambchop Rasbora (Trigonostigma espei) is a small, peaceful freshwater fish known for the distinct black triangular marking on its copper-orange body resembling the shape of a lamb chop. Native to the slow-moving, shaded streams of Southeast Asia, this Rasbora fish thrives in planted tanks with soft, slightly acidic water. It typically grows to about 1–1.5 inches long and should be kept in schools of at least six to feel secure and display natural schooling behavior. Their active yet non-aggressive nature makes them ideal tank mates for other small, peaceful species like Black Neon Tetras, Cory Catfish, and dwarf Gouramis. Caring for Lambchop Rasboras is relatively easy, making them a great choice for beginner to intermediate aquarists. They do best in warm water (72 - 80°F), soft to moderately hard water, and with subdued lighting to mimic their natural habitat. These fish are omnivores and enjoy a diet of high-quality flakes or micro pellets, along with occasional live or frozen treats like brine shrimp and daphnia. With proper care and a stable environment, Lambchop Rasboras can live up to 4 - 6 years and bring beautiful color, calm energy, and constant motion to a community aquarium. At Splashy Fish tropical fish store, our Lambchop Rasbora and other Rasbora Fish for sale are tank-bred, grown, and sold with love and care. Visit our fish store online or aquarium in Virginia for more high-quality freshwater fish for sale. We have a lot more fish available for sale, such as betta fish for sale, aquatic plants for sale, freshwater shrimp for sale, freshwater snails for sale, and other aquarium supplies. WHAT YOU CAN EXPECT FROM THIS FISH: Peaceful Community Behavior: Lambchop Rasboras are very peaceful and do great in community tanks. They get along with other small, non-aggressive fish like Tetras, Guppies, and Corydoras. They don’t nip fins or cause trouble, making them perfect for a calm tank setup. Schooling and Active Swimming: They are schooling fish, so expect to see them swimming together in tight groups, especially when kept in groups of 6 or more. Their synchronized movements are relaxing and beautiful to watch. Striking Color and Marking: You’ll notice their copper-orange body with a bold black triangular “lamb chop” mark near the tail. The contrast looks especially vibrant in tanks with green plants and darker backgrounds. Easy Care with Stable Conditions: They’re hardy and easy to care for if you keep their water clean, warm (72 - 80°F), and slightly soft to neutral. They don’t need fancy setups, just good filtration and a calm environment. RECOMMENDED TANK PARAMETERS: Temperature: 72 - 80°F (22 - 27°C) pH Range: 6.0 - 7.5 Hardness: 2 - 12 dGH (soft to moderately hard) Tank Size: Minimum 10 gallons. 15 - 20 gallons is better for a proper school of 6+ rasboras. Lighting: Low to moderate Filtration: Gentle flow with sponge or soft filter. They prefer slow-moving water, so avoid strong currents. CARE GUIDELINES: Diet: Lambchop Rasboras are omnivores, meaning they eat both plant- and animal-based foods. A balanced diet helps them stay healthy and show off their beautiful color. Some recommended foods Include High-Quality fish flakes or pellets, Algae wafers, and Live or frozen foods such as brine shrimp and daphnia. Feeding habits: Feed them 1 - 2 times a day, offering only what they can finish in about 2 - 3 minutes. They have small mouths, so use tiny food sizes. Social behavior: Lambchop Rasboras are peaceful, calm, and social. They are schooling fish and should be kept in groups of at least 6 because they feel safe and become more active in groups. Ideal for community tanks with other small, gentle fish like Tetras, Guppies, and Corydoras. Origin: Native to Southeast Asia, especially Thailand, Laos, and Cambodia Average adult size: Grows up to 1.5 inches (around 4 cm) in length Lambchop Rasbora Frequently Asked Questions FAQs Are Lambchop Rasbora aggressive? No, Lambchop Rasboras are not aggressive. They are known for being peaceful, gentle, and very social fish, making them ideal for community aquariums. What is the difference between Lambchop Rasbora and Harlequin Rasbora? Lambchop Rasboras have a thinner, more sharply angled black mark (like a meat chop) and a deeper copper - orange tone. Harlequin Rasboras are slightly bigger, with a more rounded black triangle and a pinkish or gold body. Both are peaceful, beautiful fish perfect for planted or community aquariums - the choice comes down to size, color preference, and visual style! How many Lambchop Rasboras should I keep together? They are schooling fish and should be kept in groups of at least 6, though 8 - 10 or more is even better. They feel safer and show better color and behavior in groups. { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [{ "@type": "Question", "name": "Are Lambchop Rasbora aggressive?", "acceptedAnswer": { "@type": "Answer", "text": "No, Lambchop Rasboras are not aggressive. They are known for being peaceful, gentle, and very social fish, making them ideal for community aquariums." } },{ "@type": "Question", "name": "What is the difference between Lambchop Rasbora and Harlequin Rasbora?", "acceptedAnswer": { "@type": "Answer", "text": "Lambchop Rasboras have a thinner, more sharply angled black mark (like a meat chop) and a deeper copper - orange tone. Harlequin Rasboras are slightly bigger, with a more rounded black triangle and a pinkish or gold body. 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