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Species profile

Taiwanese Bamboo Shrimp

Australatya obscura

Common names: Taiwanese Bamboo Shrimp, Taiwan Fan Shrimp

Recognized speciesFreshwater Shrimp
Taiwanese Bamboo Shrimp (Australatya obscura)

Adult size

Up to 6.5 cm

Typical adult length 4–6.5 cm.

Up to 6.5 cm

Countries of origin

  • See all stock from Japan
  • See all stock from Philippines
  • See all stock from Taiwan

Good fit for your tank?

Good fit for

  • Mature planted aquarium setups
  • Advanced shrimp keepers

Think carefully if

  • The tank is newly cycled
  • Water conditions change frequently

A rare, banded filter-feeding shrimp from coastal streams of Taiwan, the Philippines, and the southern Ryukyu Islands.

Appearance and Identification

A comparatively small fan shrimp with a dark reddish-brown to brown body and bold pale and dark bands across the abdominal segments. The first limbs carry feathered fans used for suspension feeding.

The sharply banded live coloration is distinctive, but confirmed identification should use morphological characters. The species differs from Australatya striolata in body size, rostral proportions, carapace form, leg setation, and fifth-leg dactyl structure.

Females become broader through the abdomen when mature and may be identified when carrying eggs. Reliable sexing of unberried specimens can be difficult.

Tank Requirements

Suggested filter
About 320–400 litres an hour
Suggested heater
About 75–125 W for this tank
Minimum tank volume
80 litres
Minimum tank length
60 cm
Minimum group size
1
Recommended group size
3
Activity level
Moderate
Flow preference
High
Planting preference
Moderately planted
Hiding places
Yes
Lid recommended
Yes
Jumping risk
Moderate

Use a mature, highly oxygenated aquarium with strong directional flow, current-facing rocks or wood, and secure molting shelters. Larger water volume makes suspended feeding and stable water quality easier to manage.

Behaviour and Tankmates

Peaceful filter feeder that selects a perch in moving water and opens its fans to collect suspended food. It retreats into cover during disturbance and molting.

May be kept singly or in a small group. Each shrimp should have access to a useful feeding perch within the current.

Not considered aggressive, although competition for the strongest feeding station can occur when the aquarium provides too few perches.

Keep with peaceful fish and invertebrates that will not attack a molting shrimp or nip its feeding fans. A specialist shrimp aquarium is preferred for rare stock.

Check tankmates for this species

Water Parameters

Temperature
20–26 °C
pH
6.5–7.8
GH
5–12
KH
2–8
TDS
120–250
Stability importance
Critical

Keep in a mature, well-oxygenated aquarium with moderate current and suspended microscopic foods. Avoid placing this filter feeder in a sterile new tank.

Parameter caveat
Species-specific aquarium data remain limited. Acclimate slowly to the supplier's water and avoid sudden changes in temperature, pH, hardness, and conductivity.

Feeding

Diet types
Detritivore, Omnivore
Feeding frequency
Daily
Preferred foods
  • Powdered algae-based foodDilute in aquarium water and release upstream so a light food cloud reaches the open fans.
  • Fine powdered shrimp or fry foodFeed very small portions and monitor water quality closely.

Feeds primarily by filtering microscopic algae, fine detritus, microorganisms, and prepared powder from flowing water. Continuous access to suitably sized suspended particles is essential.

A shrimp that spends long periods scraping the substrate may not be receiving enough food in suspension. Increase feeding carefully rather than adding a large single dose.

Breeding

Breeding type
Egg Layer
Breeding difficulty
Difficult
Brood or egg count
Not reliably documented for aquarium care
Parental care
None
Baby foods
  • Cultured microalgae and fine marine larval foodA species-specific larval method has not been established, so treat this as a starting point.

Captive breeding is poorly documented. Its occurrence in separate coastal island systems is consistent with an amphidromous life cycle, so the larvae should be treated as likely requiring brackish or marine development until species-specific breeding evidence establishes otherwise.

Habitat and Origin

Geographic origin
Asia, Japan, Philippines, Taiwan
Natural habitat
Fast Stream
Aquarium contexts
Freshwater Aquarium, Shrimp Tank
Audience level
Advanced

Classification

Profile type
Recognized species
Genus
Australatya
Family
Atyidae
Species group
Freshwater Shrimp, Invertebrates, Other Shrimp

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