Lambchop Rasbora (Trigonostigma espei) is a small, peaceful freshwater fish recognized by its striking black wedge-shaped marking on the body resembling a lamb chop, set against a vibrant reddish-orange coloration. Ideal for community aquariums and schooling setups.
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Lambchop Rasbora (Trigonostigma espei) is a small, peaceful freshwater fish recognized by its striking black wedge-shaped marking on the body resembling a lamb chop, set against a vibrant reddish-orange coloration. Ideal for community aquariums and schooling setups.
Bright reddish-orange body with a distinctive black wedge-shaped patch on the midsection resembling a lamb chop. Laterally compressed, streamlined body with transparent fins. Males are slightly slimmer and more brightly colored; females are slightly rounder with paler colors.
4–6 years with proper care
Omnivorous; feeds on high-quality flakes, micro pellets, frozen foods, and occasional live foods such as daphnia, brine shrimp, and micro worms. Blanched vegetables like zucchini or spinach can supplement their diet and enhance coloration.
Lambchop Rasboras are excellent for community aquariums due to their peaceful nature, vibrant coloration, and schooling behavior. They add visual interest and activity to planted tanks.
Beginner to Intermediate – hardy but prefers stable water conditions and proper schooling.
20+ gallons (for a small school)
6.0 to 7.5
2–15 dGH
72–81°F (22–27°C)
2 inches
Harlequin Rasboras, small tetras, dwarf gouramis, peaceful danios, other Rasbora species. Avoid aggressive or large fish.
Large, aggressive, or fin-nipping species that may stress or harm them.
Trigonostigma espei
Cyprinidae
Southeast Asia – Thailand and Cambodia, inhabiting shallow, slow-moving streams with vegetation.
Highly social; best kept in schools of 6 or more. Peaceful and compatible with other small community fish.
Feed 2–3 times daily with flakes, micro pellets, and frozen/live foods. Occasionally supplement with finely chopped or blanched vegetables for optimal health and coloration.
Egg-scatterer; deposits eggs among fine-leaved plants or spawning mops. Adults do not guard eggs. Condition male and female with protein-rich foods before spawning. Fry feed on infusoria or newly hatched brine shrimp.
pH: 6.0–7.5, Temperature: 72–81°F (22–27°C), Hardness: 2–15 dGH, Ammonia/Nitrite: 0 ppm, Nitrate: <20 ppm
Sensitive to poor water quality; prone to ich, stress-related illnesses, and fin damage if kept with aggressive tankmates. Maintain clean water, proper diet, and suitable school size.
Peaceful, active, and social. Best kept in schools of at least 6–8 individuals to promote natural behavior and reduce stress. Compatible with other small, non-aggressive community fish.
Native to Southeast Asia, primarily Thailand and Cambodia, Lambchop Rasboras inhabit shallow, slow-moving streams with abundant vegetation. Adults reach up to 2 inches in size. They thrive in planted tanks with moderate water flow and open swimming space. Ideal for beginner and intermediate aquarists, they are hardy, peaceful, and display vibrant colors in schools.