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Puntius amphibius, commonly known as the Striped Dwarf Barb, is a small, freshwater cyprinid fish native to the Western Ghats of India and Sri Lanka. It is characterized by its slender body, often displaying a prominent lateral stripe and reddish hues, particularly in males during breeding season. This species is known for its peaceful demeanor and schooling behavior, making it a popular choice for community aquariums.
Physical Characteristics
- Body shape
- compressed
- Coloration
- Silvery-yellow to olive-brown body, often with a distinct dark lateral stripe extending from the operculum to the caudal peduncle. Males exhibit more intense reddish coloration, especially on the fins and body, during spawning. Fins are typically hyaline (clear) to yellowish, with some red pigmentation in males.
- Scale type
- cycloid
- Mouth position
- terminal
- Distinctive features
- Prominent dark lateral stripe, Small size, typically not exceeding 6 cm, Absence of barbels, Reddish coloration in breeding males
- Dorsal fin
- Single, short-based dorsal fin with 3-4 unbranched and 8 branched rays. The last unbranched ray is often ossified and serrated.
- Tail fin
- Forked caudal fin with rounded lobes.
- Pectoral fin
- Small, clear pectoral fins.
- Distinctive fins
- Pelvic fins are also small and clear, sometimes with a reddish tint in males. Anal fin is short with 3 unbranched and 5 branched rays.
Identification Tips
Size
Small fish, rarely exceeding 6 cm (2.4 inches) in total length.
Lateral Stripe
A distinct, dark, horizontal stripe running along the flank from the gill cover to the base of the caudal fin.
Coloration
Silvery-yellow to olive-brown body. Look for reddish tints, especially in males, on the body and fins.
Barbels
Absence of barbels, which distinguishes it from some other Puntius species.
Fin Structure
Observe the dorsal fin, which often has a strong, serrated last unbranched ray.
Habitat
- Water type
- freshwater
- Depth
- Typically found in shallow waters, usually less than 1-2 meters.
- Environment
- Inhabits clear, slow-moving to moderately flowing streams, rivers, canals, and ponds. Often found among aquatic vegetation, submerged roots, and leaf litter. Prefers areas with sandy or muddy substrates.
- Geographic range
- Endemic to the Western Ghats of India (primarily Kerala, Karnataka, and Goa) and Sri Lanka.
Aquarium Information
- Care level: beginner
- Temperament: peaceful
- Diet: omnivore
- Minimum tank size: 20 gallons (75 liters)
- Temperature: 22-26°C (72-79°F)
- pH level: 6.0-7.5
- Hardness: 5-15 dGH
- Compatibility: Excellent for community tanks with other peaceful, similarly sized fish. Avoid housing with very large or aggressive species that might prey on them.
- Special requirements: Prefers a well-planted aquarium with open swimming areas. Benefits from a soft, sandy substrate and subdued lighting. Keep in schools of at least 6-8 individuals to reduce stress and encourage natural behavior.
Wild Information
- Conservation status: least concern
- Seasonality: Breeds during the monsoon season in its natural habitat, typically from June to September.
- Market price: Low to moderate
- Commercial importance: medium
- Taste: Mild, slightly earthy
- Texture: Delicate, flaky
- Cooking methods: Frying, Curry, Steaming
- Nutritional value: Good source of protein and omega-3 fatty acids, typical of small freshwater fish.
Key Facts
Taxonomic Historyevolution
The genus Puntius has undergone significant taxonomic revision. Many species previously placed in Puntius have been reclassified into other genera such as Pethia, Dawkinsia, and Systomus. Puntius amphibius has largely retained its original generic placement, though some sources may still refer to it under older classifications.
Ecological Rolebehavior
As a small, omnivorous fish, Puntius amphibius plays a role in controlling insect larvae and consuming algae, contributing to the health of its freshwater ecosystems. It also serves as a food source for larger predatory fish and birds.
Aquarium Popularityinteresting
Despite its relatively subdued coloration compared to some other barbs, its peaceful nature, small size, and hardiness make it a good choice for beginner aquarists and community tanks.
Breeding Behaviorbehavior
In the wild, they are egg scatterers, typically laying eggs among fine-leaved plants. In aquariums, they can be bred, but parental care is absent, and eggs are often consumed by adults if not separated.
Safety Information
Safe- Safety level: safe
- Venomous: No
- Edibility: edible
- Handling notes: No specific handling precautions are required beyond general care for small fish. They are not venomous and do not possess sharp spines that pose a significant threat. Handle gently to avoid stress or injury to the fish.
Similar Species
Red-striped Barb
Puntius vittatus
Puntius vittatus typically has multiple, often broken, lateral stripes and usually possesses a pair of small maxillary barbels, which P. amphibius lacks. P. vittatus also tends to be slightly smaller and less robust.
Blackspot Barb
Puntius filamentosus
Puntius filamentosus is a larger species (up to 15 cm) and is characterized by a prominent black spot on the caudal peduncle, which P. amphibius lacks. P. filamentosus also has elongated dorsal fin rays in males.
Cherry Barb
Puntius titteya
Puntius titteya is known for its vibrant cherry-red coloration, especially in males, and a less distinct lateral stripe compared to P. amphibius. It is also typically found in Sri Lanka but has a different body shape and fin structure.
Scientific Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Actinopterygii
- Order
- Cypriniformes
- Family
- Cyprinidae
- Genus
- Puntius
- Species
- Puntius amphibius
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