Lambchop Harlequin Rasbora (ESPEI)

Lambchop Rasbora (Trigonostigma espei)

Common Names: Lambchop Rasbora, Porkchop Rasbora, False Harlequin Rasbora
Scientific Name: Trigonostigma espei
Native Location: Thailand
Climate: Tropical
Size: 1 – 1.5 inches (2.5 – 3.8 cm)
Temperament: Peaceful
Diet: Omnivore
Breeding: Easy–Moderate
Temperature Range: 22 – 26°C (72 – 79°F)
Preferred pH Range: 6.0 – 7.0
KH Range: 2 – 10 dKH
Minimum Aquarium Size: 10 gallons
Potential Tankmates: Other peaceful fish, snails, shrimp, live plants
Care Level: Beginner–Intermediate

Introduction

Lambchop Rasboras are captivating freshwater fish known for their vibrant red or orange bodies adorned with a distinctive black or dark purple mark on their sides, resembling a lambchop. This unique pattern, combined with their peaceful nature, makes them a popular choice for community aquariums. They are particularly striking against dark-colored substrates, which enhance their bold colors.

Physical Characteristics

• Bright red or orange body with a lambchop-shaped black or dark purple mark on the sides

• Males are more colorful with pointed markings, females are rounder with softer markings

• Small size (1 – 1.5 inches) ideal for nano and community tanks

Behavior and Compatibility

• Peaceful, schooling fish that thrive in groups of 6 or more

• Compatible with other non-aggressive species, snails, shrimp, and live plants

• Encourages natural schooling behavior and reduces shyness

Diet and Feeding

• Omnivorous and not picky

• Accepts high-quality flake foods, pellets, and algae wafers

• Diet should be supplemented with live or frozen foods such as brine shrimp, bloodworms, daphnia, and insect larvae

• Enjoys blanched vegetables like lettuce, zucchini, and kale

• A varied diet enhances coloration and encourages breeding

Tank Setup and Care

• Tank Size: Minimum 10 gallons

• Water Conditions: Temperature 22 – 26°C (72 – 79°F), pH 6.0 – 7.0, KH 2 – 10 dKH

• Aquarium Decor: Plenty of plants, rocks, and driftwood to provide cover and mimic natural habitat

• Social Behavior: Best kept in schools; will school with other rasboras and danios

Breeding

Lambchop Rasboras can spawn in a well-maintained, densely planted aquarium. Males display brighter colors and court females with a dance. Fry may appear if the tank is optimal and well-cycled. Maintaining a varied diet helps encourage breeding.

What We Like About This Fish

• Unique lambchop-shaped pattern with striking colors

• Forms schools with other rasboras and danios

• Safe with plants and peaceful tankmates

• Suitable for beginners and experienced aquarists

Lambchop Rasboras are an excellent addition to any aquarium, bringing vibrant colors, peaceful behavior, and fascinating schooling dynamics. With proper care, they will thrive and create a lively, visually appealing display.

Sample photo is for reference only. Exact fish may vary in size and colour.