Australian Amano Shrimp

Australian Amano Shrimp

The Australian Amano Shrimp (*Caridina multidentata*) is a popular freshwater shrimp species, known for its exceptional algae-eating abilities and peaceful nature. Originally from the rivers and streams of Japan, this shrimp has gained popularity in aquascaping and aquarium hobby due to its efficient cleaning habits and striking appearance.

Physical Characteristics:

• Size: Australian Amano Shrimp typically grow to about 5-7 cm (2-3 inches) in length.
• Coloration: They are characterised by a transparent to light greenish body, often with a mottled pattern that can include shades of brown and green. Their coloration allows them to blend well with aquatic plants and substrates.
• Eyes: Their large, prominent eyes are usually red or black, giving them a distinctive look.
• Shape: Their bodies are elongated and slightly flattened, with long antennae that aid in sensing their environment.

Behaviour:

• Temperament: Australian Amano Shrimp are generally peaceful and social creatures, making them ideal for community tanks. They coexist well with other shrimp and peaceful fish species.
• Activity Level: They are active scavengers, often seen foraging for food among plants and substrate. Their curious nature keeps them engaged in their surroundings.
• Community Behaviour: These shrimp can be housed in groups and will often interact with each other while grazing on algae and detritus.

Aquarium Care:

• Tank Size: A minimum tank size of 20 liters (5 gallons) is recommended for a small group of Australian Amano Shrimp, but larger tanks are preferable for better stability and water quality.
• Water Parameters:
  • Temperature: They thrive in temperatures ranging from 18°C to 26°C (64°F to 79°F).
  • pH: Amano Shrimp prefer slightly acidic to neutral water, with a pH range of 6.5 to 7.5.
  • Hardness: Soft to moderately hard water, with a general hardness (GH) of 3-10 dGH, is ideal.
• Tank Setup:
  • Substrate and Decorations: A soft substrate is recommended, with plenty of hiding spots created by using live plants, rocks, and driftwood. This provides cover and reduces stress.
  • Lighting: Moderate lighting is suitable for growing plants while maintaining a comfortable environment for the shrimp.
  • Filtration: A gentle filtration system is ideal, as strong currents can stress shrimp. Regular water changes (about 20% weekly) are essential for maintaining a healthy environment.

Diet:

Australian Amano Shrimp are omnivorous and require a varied diet to thrive. Their diet should include:

• Algae: They are particularly effective at eating algae, making them excellent clean-up crew members in aquariums.
• Pellets: High-quality shrimp pellets or flakes should form the staple of their diet, providing essential nutrients.
• Vegetable Matter: Blanched vegetables such as zucchini, spinach, or cucumber can be offered as occasional treats.
• Organic Matter: They will also consume detritus and leftover fish food, aiding in tank cleanliness.

Tankmates:

Australian Amano Shrimp can be housed with a variety of peaceful tankmates, including:

• Small Tetras: Such as Neon Tetras or Ember Tetras.
• Peaceful Rasboras: Like Harlequin Rasboras.
• Other Shrimp: They coexist well with other shrimp species, such as Cherry Shrimp or Crystal Red Shrimp.

Avoid housing them with aggressive fish or fin-nippers, as this can lead to stress or injury.

Breeding:

Breeding Australian Amano Shrimp can be challenging, as they require brackish water for the larval stage:

• Breeding Setup: A separate breeding tank with a mix of freshwater and brackish water (low salinity) is ideal for breeding.
• Spawning Behaviour: Females will carry fertilised eggs under their tails until they hatch. The larvae will then need brackish conditions to develop properly.
• Fry Care: Once the fry are free-swimming, they can be fed with infusoria or specially formulated fry food.

Special Considerations:

• Water Quality: Regular monitoring and maintenance of water quality are crucial for the health of Australian Amano Shrimp.
• Shy Nature: These shrimp can be shy, particularly in brightly lit tanks. Providing plenty of hiding spots can help them feel more secure.