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The Black-spotted Wrasse (Austrolabrus maculatus) is a medium-sized wrasse endemic to the temperate waters of southern Australia. It is characterized by its robust body, distinctive coloration, and prominent black spots, which can vary in intensity and distribution. This species is a benthic carnivore, playing an important role in its reef ecosystems.
Physical Characteristics
- Body shape
- compressed
- Coloration
- Highly variable. Generally, the body is reddish-brown to olive-green, often with lighter ventral surfaces. Distinctive black spots are scattered across the body, particularly on the flanks and fins. Males tend to be more brightly colored, especially during breeding, displaying iridescent blue or green markings on the head and fins. Juveniles may have more pronounced spotting and a less vibrant base color.
- Scale type
- cycloid
- Mouth position
- terminal
- Distinctive features
- Prominent black spots on body and fins, Thick, fleshy lips, Robust body shape, Terminal mouth with canine-like teeth
- Dorsal fin
- Single, long dorsal fin with 9 spines and 11-12 soft rays. The spinous portion is typically lower than the soft-rayed portion.
- Tail fin
- Rounded to slightly truncate caudal fin.
- Pectoral fin
- Large, rounded pectoral fins.
- Distinctive fins
- Pelvic fins are relatively small and located ventrally. All fins are generally robust and may also bear black spots.
Identification Tips
Black Spots
The most defining feature is the presence of distinct black spots on the body and fins. The number, size, and intensity of these spots can vary, but they are almost always present.
Body Shape
A robust, compressed body with a relatively deep profile distinguishes it from more slender wrasse species.
Head and Mouth
Possesses a relatively large head with thick, fleshy lips and a terminal mouth equipped with prominent canine teeth, indicative of its predatory nature.
Geographic Location
Its restricted distribution to temperate southern Australian waters is a key identifier.
Habitat
- Water type
- saltwater
- Depth
- Typically found in shallow coastal waters from 1 to 40 meters (3 to 130 feet), occasionally deeper.
- Environment
- Inhabits rocky reefs, kelp forests, and areas with mixed sand and rubble. They are often associated with dense algal growth and crevices for shelter.
- Geographic range
- Endemic to the temperate waters of southern Australia, from southern Western Australia, across South Australia, Victoria, Tasmania, and New South Wales.
Aquarium Information
- Care level: intermediate
- Temperament: semi-aggressive
- Diet: carnivore
- Minimum tank size: 180 gallons (680 liters)
- Temperature: 16-22°C (61-72°F)
- pH level: 8.1-8.4
- Hardness: 8-12 dKH
- Compatibility: Best kept with other robust, temperate marine fish. Not suitable for reef tanks with small invertebrates or peaceful, slow-moving fish. May be aggressive towards conspecifics unless in a very large tank with ample hiding spots.
- Special requirements: Requires a well-established temperate marine aquarium with plenty of live rock for hiding and foraging. A deep sand bed is beneficial as they may burrow at night or when stressed. Excellent filtration and stable water parameters are crucial. Provide a varied diet of meaty foods.
Wild Information
- Conservation status: least concern
- Seasonality: Breeding typically occurs during the warmer months, but they are present year-round in their habitat.
- Market price: N/A (not typically a commercial food fish)
- Commercial importance: none
- Taste: N/A (not typically consumed)
- Texture: N/A (not typically consumed)
- Nutritional value: N/A (not typically consumed)
Key Facts
Sex Changebehavior
Like many wrasses, Austrolabrus maculatus is a protogynous hermaphrodite, meaning individuals typically start as females and can later change sex to become males.
Benthic Foragerbehavior
This wrasse is a highly effective benthic forager, using its strong jaws and teeth to crush shells of mollusks and crustaceans, playing a vital role in controlling invertebrate populations on rocky reefs.
Territorial Behaviorbehavior
Adult males can be quite territorial, especially during breeding season, defending their chosen areas from other males.
Nocturnal Burrowingbehavior
Black-spotted Wrasses are known to burrow into the sand or hide in rock crevices at night to protect themselves from predators while they sleep.
Safety Information
Handle with care- Safety level: caution
- Venomous: No
- Edibility: not recommended
- Handling notes: While not venomous, like many wrasses, they possess strong jaws and sharp teeth. Handle with care to avoid bites, especially if attempting to unhook. They are generally not aggressive towards humans in their natural environment.
Similar Species
Blue-throated Wrasse
Notolabrus tetricus
While also found in similar habitats, the Blue-throated Wrasse typically lacks the prominent black spots of A. maculatus. Males of N. tetricus have a distinctive blue throat and head coloration, which is absent in A. maculatus.
Maori Wrasse
Ophthalmolepis lineolata
The Maori Wrasse has distinct horizontal stripes and a more elongated body shape, lacking the scattered black spots characteristic of the Black-spotted Wrasse. Its coloration is also generally more vibrant with iridescent lines.
Scientific Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Actinopterygii
- Order
- Labriformes
- Family
- Labridae
- Genus
- Austrolabrus
- Species
- maculatus
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