Ninja Shrimp
Marosina serratirostris
A captivating freshwater shrimp from the Indo-West Pacific, celebrated by aquarists for its remarkable and rapid color-changing camouflaging abilities.
Temperatura da água
20 - 27 °C
Valor de pH
6.5 - 8
Tipo de água
Água doce
Tipo invertebrado
Freshwater shrimp
Tamanho adulto
3,5 cm
Grupo mínimo
>= 6
GH
6 - 15 dGH
KH
2 - 8 dKH
TDS
110 - 305 ppm
Papel ecológico
Scavenger
Sensibilidade ao cobre
High
Descrição da espécie
Geographical Origin and Habitat: Widely distributed in the Indo-West Pacific region, ranging from Madagascar to Fiji and northern Australia. It inhabits coastal freshwater rivers, streams, and swamps with slow flow and dense vegetation.
Taxonomy: Historically classified as Caridina serratirostris. Recent taxonomic works (circa 2026) place it in the genus Marosina based on genetic and morphological uniqueness. Belongs to the family Atyidae, named for its serrated rostrum.
Social Behavior: Peaceful, active, and highly social. They should be kept in groups of at least 8 to 10 individuals to encourage active behavior. They spend their time grazing on bio-cover, organic detritus, and algae.
Coloration and Sexual Dimorphism: Famous for their ability to quickly change color from bright red to brown, black, blue, or cream, matching their substrate. Females are slightly larger and have deeper abdominal plates to carry eggs.
Cuidado, criação e companheiros de tanque
Tank Setup: A well-planted aquarium of at least 40 liters (approx. 10 gallons) is required. Include plenty of fine-leaved plants, mosses, and driftwood to provide grazing surface and hiding spaces. Use dark substrate to enhance their colors.
Diet and Feeding: Primarily herbivorous scavenger. Feeds on algae, biofilm, and decaying leaves. Supplement with high-quality shrimp pellets, spirulina powder, blanched spinach, and organic leaf litter like catappa leaves.
Water Quality: Keep temperatures between 22°C and 27°C (72-81°F), pH 6.5 to 8.0, and soft to medium hardness. Ensure a sponge pre-filter is installed on filter intakes to prevent shrimp from being sucked in. Water must be well-oxygenated.
Compatibility and Tankmates: Peaceful toward all tankmates. Best kept in a dedicated shrimp tank. If housed in community aquariums, choose small, non-aggressive species like micro-devario or small tetras. Avoid large or predatory fish.
Aquarium Breeding: Extremely challenging. While females spawn and carry numerous tiny eggs, the hatched larvae require brackish water stages to develop and metamorphose before transitioning back to freshwater, similar to Amano shrimp.
Risks and Diseases: Copper is highly toxic even in trace amounts. Susceptible to molting issues if water minerals are low. Avoid rapid water parameter fluctuations during water changes; drip acclimation is highly recommended.
Origem e distribuição geográfica
Widely distributed in the Indo-West Pacific region, ranging from Madagascar to Fiji and northern Australia. It inhabits coastal freshwater rivers, streams, and swamps with slow flow and dense vegetation.
Origem
Oceanos tropicais e recifesÁfrica e MadagascarAustrália, Nova Guiné e Oceania
Perfil de invertebrados
- Dieta
- Omnivore
- The diet of Caridina serratirostris typically consists of organic detritus, microalgae, or specific planktonic particles. In a home aquarium, they constantly forage along the substrate or rockwork looking for nourishment. Supplemental feeding with specialized invertebrate pellets or liquid foods may be necessary. Ensuring a varied and nutritious diet will promote vibrant colors and long-term health. Overfeeding should be avoided to maintain optimal water quality.
- Papel ecológico
- Scavenger
- In the wild, Caridina serratirostris plays a crucial role in maintaining the balance of its native ecosystem. They often act as natural cleaners, breaking down waste materials and unconsumed food. Their constant movement helps aerate the sand bed and prevent the buildup of toxic gases. By managing algae growth, they create space for slow-growing corals and sponges to thrive. A balanced aquarium ecosystem relies heavily on their diligent cleaning efforts.
- Tamanho adulto
- 3.5 cm
- Risco de salto
- Yes
- There is generally a very low jump risk associated with this aquatic invertebrate. They typically remain fully submerged and attached to the substrate, glass, or rockwork. However, some species may occasionally climb above the waterline if the tank is tightly sealed or if conditions degrade. It is still recommended to use a lid or screen to prevent other inhabitants from escaping. Maintaining high water quality will discourage any attempts to leave the aquatic environment.
- Sensibilidade ao choque
- High
- This invertebrate is highly sensitive to rapid fluctuations in water parameters. Sudden changes in temperature, salinity, or pH can cause severe osmotic shock and death. A slow and careful acclimation process, preferably drip acclimation, is absolutely necessary. Maintain stable aquarium conditions through regular monitoring and automated top-offs. Avoid performing excessively large water changes at once.
- Cálcio e minerais
- Medium
- Proper calcium levels are absolutely vital for the structural integrity and growth of this species. They continuously extract calcium carbonate from the water to build their shells, skeletons, or protective tubes. Maintaining calcium levels between 400 and 450 ppm ensures they remain healthy. It is also important to balance alkalinity and magnesium alongside calcium supplementation. Regular testing is required in heavily stocked reef aquariums.
- Muda
- Regular
- If applicable to its morphology, this invertebrate undergoes periodic molting to facilitate growth. During the molting process, the organism becomes extremely vulnerable to predation and stress. It is crucial to provide ample hiding spaces, such as caves or crevices, where they can retreat safely. Do not remove the discarded exoskeleton, as they often consume it to quickly replenish essential minerals. Disturbing them during this delicate phase can lead to fatal complications.
- Reprodução
- Oviparous
- Reproduction in the home aquarium is often challenging and rare for many invertebrate species. Most require highly specific environmental triggers, such as temperature shifts or lunar cycles. The resulting larvae usually have a prolonged planktonic stage, making them difficult to rear. Specialized food sources like phytoplankton are needed to sustain the offspring. Consequently, most specimens available in the hobby are wild-caught or professionally aquacultured.
- Compatibilidade e companheiros de tanque
- Peaceful
- Compatibility varies largely based on the specific species and tank mates. They are generally peaceful but can fall prey to aggressive or predatory fish. Ensure they are housed with calm tank mates that will not nip or harass them. Research individual species requirements to avoid territorial disputes. Always monitor new additions carefully to ensure harmonious interactions.
Espécies relacionadas
Recomendações agrupadas por parentes próximos, escolhas de acompanhantes e cuidados semelhantes.
