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Gobiomorphus australis, commonly known as the Striped Gudgeon, is a small, benthic freshwater fish belonging to the family Eleotridae. It is characterized by its robust body, large head, and distinctive dark stripes or blotches along its flanks. This species is an important component of freshwater ecosystems in its native range, often found in slow-moving or still waters with ample vegetation and substrate for cover.
Physical Characteristics
- Body shape
- elongated
- Coloration
- Variable, typically light brown to olive-green dorsally, fading to a lighter ventral surface. Distinctive dark, irregular, horizontal stripes or blotches run along the flanks. Fins are often dusky with faint banding.
- Scale type
- ctenoid
- Mouth position
- terminal
- Distinctive features
- Robust body with a large head and broad mouth., Two separate dorsal fins., Prominent dark horizontal stripes or blotches along the body., Large, slightly protruding eyes.
- Dorsal fin
- Two separate dorsal fins; the first dorsal fin has 6-8 spines, and the second dorsal fin has 1 spine and 8-10 soft rays.
- Tail fin
- Rounded to slightly emarginate caudal fin.
- Pectoral fin
- Large, rounded pectoral fins.
- Distinctive fins
- Pelvic fins are separate and located thoracically, not fused into a disc as in true gobies.
Identification Tips
Body Pattern
Look for the characteristic dark, irregular horizontal stripes or blotches along the sides of the body, which are usually quite prominent.
Dorsal Fins
Note the presence of two distinct dorsal fins, a key feature distinguishing gudgeons from some other small freshwater fish.
Head and Mouth
Observe the relatively large head and broad, terminal mouth, indicative of its predatory feeding habits.
Pelvic Fins
Confirm that the pelvic fins are separate, not fused into a suction disc, which differentiates it from true gobies (family Gobiidae).
Habitat
- Water type
- freshwater
- Depth
- Typically found in shallow waters, from a few centimeters to a few meters deep.
- Environment
- Prefers slow-moving or still waters of rivers, creeks, billabongs, and swamps. Often associated with dense aquatic vegetation, submerged logs, root masses, and rocky substrates, which provide cover and ambush points.
- Geographic range
- Endemic to eastern Australia, ranging from the Fitzroy River system in Queensland south through New South Wales to Victoria, and west into the Murray-Darling Basin.
Aquarium Information
- Care level: intermediate
- Temperament: semi-aggressive
- Diet: carnivore
- Minimum tank size: 75 liters (20 gallons)
- Temperature: 18-26°C (64-79°F)
- pH level: 6.5-7.5
- Hardness: 5-15 dGH
- Compatibility: Can be kept with similarly sized, robust fish. May be aggressive towards smaller or more docile species, especially during breeding. Best kept in species-specific tanks or with other Australian native fish.
- Special requirements: Requires a well-filtered tank with plenty of hiding places such as rocks, driftwood, and dense vegetation. A sandy or fine gravel substrate is preferred. Good water quality is essential.
Wild Information
- Conservation status: least concern
- Seasonality: Breeding typically occurs during spring and summer months, influenced by water temperature and rainfall.
- Market price: N/A
- Commercial importance: low
- Taste: Mild, slightly earthy
- Texture: Flaky, white flesh
- Cooking methods: Pan-fried, Baked, Grilled
- Nutritional value: Good source of protein and omega-3 fatty acids.
Key Facts
Ambush Predatorbehavior
The Striped Gudgeon is a classic ambush predator, often lurking among vegetation or submerged structures, waiting for unsuspecting prey to pass by.
Parental Carebehavior
Males of Gobiomorphus australis exhibit parental care, guarding the eggs after spawning until they hatch.
Habitat Indicatorinteresting
The presence of Striped Gudgeons can be an indicator of good water quality and healthy aquatic vegetation in freshwater systems.
Benthic Lifestylebehavior
As a benthic species, it spends most of its time on or near the bottom of its aquatic environment, foraging for food.
Safety Information
Safe- Safety level: safe
- Venomous: No
- Edibility: edible
- Handling notes: No specific handling precautions are required beyond standard fish handling practices to minimize stress to the fish. They are not venomous and do not possess sharp spines that pose a significant threat.
Similar Species
Flathead Gudgeon
Philypnodon grandiceps
Generally lacks the distinct horizontal stripes of G. australis, often having a more mottled or blotchy pattern. Has a noticeably flatter head profile.
Empire Gudgeon
Hypseleotris compressa
Typically more brightly colored, especially males during breeding, with iridescent blues and reds. Body shape is generally more compressed laterally and less robust than G. australis.
Firetail Gudgeon
Hypseleotris galii
Smaller and more slender than G. australis, often with a reddish or orange caudal fin, particularly in males. Lacks the prominent horizontal stripes.
Scientific Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Actinopterygii
- Order
- Gobiiformes
- Family
- Eleotridae
- Genus
- Gobiomorphus
- Species
- australis
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