Cockatoo Waspfish (Ablabys taenianotus)
The Cockatoo Waspfish (Ablabys taenianotus) is a unique and intriguing species known for its remarkable camouflage and distinctive morphology. Native to the tropical Western Pacific Ocean, including regions from Malaysia to Japan and Indonesia to Australia, this species inhabits shallow, subtidal areas with sandy, silty, or rubble bottoms, and is also found in seagrass beds.
Key Information
• Small fish safe: ⚠️ With caution (may prey on very small fish)
• Small invertebrate safe: ❌ No (preys on small crustaceans and invertebrates)
• Coral safe: ✅ Yes (does not harm corals)
• Minimum tank size: 100 litres (26 gallons)
• Adult size: Up to 15 cm (6 inches)
• Diet: Carnivorous, feeding on small shrimp and other tiny crustaceans
• Be aware of: Venomous dorsal spines; handle with extreme care to avoid envenomation
Appearance and Colouration
The Cockatoo Waspfish exhibits a laterally compressed body with a prominent dorsal fin extending from the head to the base of the caudal fin, resembling a cockatoo’s crest. Colouration varies from cream to dark brown, often with irregular spots, aiding in its camouflage among debris and seaweed.
Natural Habitat and Behaviour
In the wild, Ablabys taenianotus is typically found at depths ranging from 0.6 to 18.2 meters (2 to 60 feet), inhabiting sandy, silty, or rubble substrates, as well as seagrass beds. This species is benthic and nocturnal, often seen rocking back and forth on the bottom in response to water movement, mimicking debris or dead leaves. It is usually solitary or found in pairs and is an opportunistic predator, feeding on small shrimp and other tiny crustaceans.
Tank Requirements and Water Parameters
• Minimum Tank Size: 100 litres (26 gallons)
• Water Parameters:
• Temperature: 23°C – 26°C (73°F – 79°F)
• pH: 8.1 – 8.4
• Specific Gravity: 1.020 – 1.025
• Aquascaping: Provide ample hiding places with live rock, sandy substrates, and seagrass to mimic their natural environment.
• Lighting: Low to moderate, accommodating their nocturnal nature.
• Water Movement: Low to moderate, replicating their natural habitats.
Important Note: Maintain high water quality, as this species is sensitive to poor conditions.
Diet and Feeding
Cockatoo Waspfish are carnivorous and may require live food, especially when first introduced to captivity.
• Preferred Diet:
• Live small shrimp and other tiny crustaceans.
• May accept frozen foods over time, but live food is often necessary initially.
• Feeding Frequency: 2–4 times per week, offering small amounts each time.
Training Tip: Be prepared to provide live food for an extended period, as they may not readily accept non-live offerings.
Compatibility and Social Structure
• Temperament: Docile but may exhibit aggression towards similar species of the same gender.
• Tank Mates:
• Compatible with larger, non-threatening species.
• Exercise caution when housing with small fish or shrimp, as they may be preyed upon.
• Co-habitation: Can coexist as a pair if introduced simultaneously.
Important Considerations
• Venomous Spines: Possess highly venomous dorsal spines; envenomation can be severe. Handle with extreme caution and ensure awareness of first aid procedures for venomous fish stings.
• Camouflage: Their excellent camouflage can make them difficult to spot, increasing the risk of accidental contact.
• Feeding Challenges: May refuse non-live food, necessitating a consistent supply of live prey.
Summary
The Cockatoo Waspfish (Ablabys taenianotus) is a fascinating species suitable for experienced aquarists who can meet its specific care requirements. Its unique appearance and behaviours make it a captivating addition to a well-maintained marine aquarium. However, potential keepers must be prepared to handle its venomous nature and dietary preferences responsibly.