The Orange Rili shrimp (Neocaridina davidi formerly heteropoda) is a pied specimen of the genus dwarf shrimp.
Orange areas alternate with transparent sections.
Often the middle of the body is transparent and the orange areas are in the head and tail area.
The colouring varies from yellow-orange to orange. Various variations enrich the pattern of this shrimp species.
The sexes can be easily distinguished. The female of the Orange Rili shrimp is more intensely coloured and can reach a size of 3 cm.
The somewhat “paler” male remains smaller. The life expectancy of the Orange Rili shrimp is between 18 and 24 months.
The Orange Rili shrimp makes no special demands on its environment. The sociable animals should be kept in groups of between 10 and 20 pieces. The aquarium floor can consist of fine-grained gravel or sand. Gravel is best suited to the conditions of their home country (Taiwan). They use lush planting to find food and as a hiding place. Different types of moss, roots or small clay tubes bring variety to the shrimp life. The tank should have at least 20 litres. Depending on the number of Orange Rili Shrimp and their roommates, the size of the aquarium must be adapted to the necessary habitat.
This shrimp species tolerates water temperatures of 16 °C to 28 °C. Ideally, the temperature is between 18 °C and 24 °C. Larger fluctuations should be avoided. The pH value can be between 6 and 8. The total hardness can reach up to 20 °dGH and the carbonate hardness up to 14 °dKh. The Orange Rili shrimp feels most comfortable with a water composition with a pH value of 7.0 to 7.5, a total hardness of 5 to 10 °dGH and a carbonate hardness of 2 to 6 °dKh. They are sensitive to heavy metal residues (copper, iron). Before using tap water, ask the water authority or use treated water. The oxygen-rich water should be renewed regularly (once a week) in smaller quantities.
These omnivores can be easily satisfied. They feed on algae and dead plant parts. Food leftovers from roommates are gladly taken. Autumn leaves of oak and beech belong on the menu of the Orange Rili shrimp. The mainly vegetable food can be enriched with frozen food.
Regular feeding of mosquito larvae and special shrimp food enriches the food supply. Variety can also be achieved by adding vegetables. A peeled raw cucumber or briefly cooked vegetables (zucchini, paprika or similar) are gladly taken. These small, active animals keep the aquarium clean and are constantly looking for food.
Once the Orange Rili shrimp has settled in its new home and feels comfortable, it is extremely active in terms of reproduction. The female releases her young about every 5 to 6 weeks. The gestation period lasts three to four weeks. During this time the female Orange Rili shrimp carries up to 30 golden yellow eggs under her abdomen. The female feeds her brood by fanning oxygenated water. She uses her webbed legs for this. After hatching, the small shrimp are fully developed. If there are enough hiding places from predators, most of the young shrimps will survive. However, this rapid egg production is only possible under particularly optimal conditions. As a rule, offspring are expected every two to three months. The adult Orange Rili shrimp does not threaten its offspring.
The danger can arise from roommates. You should also use a sponge filter so that this miniature offspring is not sucked in. The independent mini shrimp are self-sufficient. After birth the characteristic colour is not very pronounced. Only in the course of time does the pattern with the orange and transparent sections become visible. Sometimes large orange areas may appear or the colouring is not intense. Despite this frequent offspring, overpopulation is rather rare. Not all small Orange Rili shrimp reach adulthood.
These peaceful and sociable animals can be socialized with fish, other shrimps and snails. It makes sense to choose small and non-aggressive fish as mates. Above all you should avoid accidentally using predators for the Orange Rili shrimp. Snails as roommates have a practical advantage. The small shrimp do not graze the algae from the slices of the tank. The snails can do this.