Neocaridina davidi

A Little More Information...

Introduction

The Neocaridina davidi, also sold as Yellow or Golden Back, is a freshwater shrimp color variety developed from Neocaridina davidi. Its yellow to golden body and stronger dorsal line make it especially attractive in a planted aquarium. Small and generally peaceful, it spends much of its time grazing on surfaces covered with biofilm. It is easy to maintain when the water is stable, well oxygenated and free of copper. This variety is very common in the aquarium hobby and works well in calm community aquariums. Dense plants and mature surfaces also provide valuable shelter for juveniles.

General species description

Neocaridina davidi is a color variety of Neocaridina davidi, a small freshwater shrimp belonging to the family Atyidae. The Yellow/Golden Back form is selected for its yellow coloration, often combined with a more visible golden dorsal stripe in adult females. It lives mainly on plants, rocks, roots and other surfaces where it collects biofilm. Its behavior is peaceful, although juveniles may be eaten by fish large enough to swallow them. Reproduction takes place entirely in freshwater, without a marine larval stage, making colony growth easy in an aquarium. Stable water and regular but moderate water changes support long-term health.

Geographic origin and biotope

Reference countries: China and Taiwan. The species is associated with East Asia, where it occurs in streams, ditches, ponds and other small freshwater habitats, including calm or slow-flowing environments. Commercial yellow forms are captive-bred selections rather than a separate geographic population. The natural setting may include stones, branches, leaf litter and aquatic or marginal vegetation. Water depth varies by habitat, but these shrimp commonly use shallow areas and illuminated surfaces where biofilm develops. In an aquarium, dense vegetation and mosses provide essential shelter for young shrimp and increase the available grazing area.

Precise location and local name

Neocaridina davidi is associated with the Asian range of Neocaridina davidi, especially China and Taiwan. The most common trade name is Yellow Shrimp, while Golden Back describes the stronger color along the dorsal area. This is not a traditional local name tied to one specific river, but an international aquarium-trade name. In stores and among breeders, Yellow, Yellow Sakura and Golden Back may be used for selections whose color coverage and intensity differ. Selective breeding strongly influences the final shade, so specimens from different lines may not look identical.

Appearance and physical characteristics

The body is compact, slightly curved and protected by a transparent to yellow exoskeleton. In high-quality specimens, the color covers much of the body and a golden-yellow dorsal band contrasts with the sides. Females are usually larger and more heavily colored than males, and they have a broader abdomen for carrying eggs. Long antennae, slender walking legs and small mouthparts help the shrimp explore surfaces and collect particles. Adult size generally reaches about 2 to 3 cm. Color may vary with the strain, age, stress level, lighting and aquarium background, so the same line can display different shades under different conditions.

General diet

Neocaridina davidi continuously grazes on biofilm growing on leaves, rocks, décor and aquarium glass. It also accepts specialized shrimp foods, vegetable-based wafers and small portions of blanched vegetables such as zucchini or spinach. A varied diet may include mineral-containing foods that support molting, but overfeeding should be avoided. Dried catappa or oak leaves can provide grazing surfaces and a source of organic matter. Remove uneaten food when it remains for too long, because excess waste can contribute to molting problems and rapid deterioration of water quality.

Essential data

• Name of the original river: Small streams and freshwater habitats of East Asia
• Local name used: Yellow Shrimp, Golden Back
• Origin of the scientific name: Genus Neocaridina, species davidi
• Full-name etymology: Neocaridina means new Caridina; davidi honors Armand David
• Common/vernacular names: Yellow Shrimp, Golden Back
• Family: Atyidae
• Subfamily: Atyinae
• Name pronunciation: nee-oh-kair-ih-DEE-nah - dah-VEE-dee
• Discovery: Stanley Wells Kemp, 1918
• Maximum adult size: About 3 cm, with females usually larger
• Water temperature and pH: 18 to 26 °C; pH 6.5 to 8.0
• Stream appearance and surrounding vegetation: Small freshwater habitats with stones, branches, leaf litter, mosses and marginal vegetation
• Typical tankmates: Neritina natalensis, Caridina multidentata, Otocinclus affinis, Boraras brigittae, Microdevario kubotai
• Temperament and behavior: Peaceful, active on surfaces, social and primarily a grazer
• Water depth: Generally shallow areas
• Sexual dimorphism: Females are larger, broader and often more colorful; the ovarian saddle and eggs may be visible in a berried female
• Bottom structure and flow: Stones, branches, leaves and plant debris; low to moderate flow

In your aquarium

For success with Neocaridina davidi, use a mature, densely planted aquarium with plenty of surfaces supporting biofilm. Stable temperature, pH and mineral content matter more than chasing one exact number. Avoid copper, harsh treatments and predatory tankmates. A filter intake covered with fine protection will help preserve juveniles. Feed lightly, watch the molting process and provide cover such as Java moss. With these precautions, this very easy-to-breed shrimp can establish a long-lasting and colorful colony. Stable maintenance is the key to keeping losses low and reproduction consistent.