Denison's Barb
 

Puntius denisonii, commonly known as the Denison's barb, red line torpedo barb, roseline shark, bleeding eye barb or Miss Kerala, is a subtropical fish belonging to the Puntius (barb) genus in the Cyprinidae (minnow) family. It is endemic to the fast-flowing hill streams and rivers of the state of Kerala and South Karnataka in South India. They prefer a water temperature range of 15 to 25 °C (59 to 77 °F) and almost certainly live for over 8 years.

Physical characteristics

The fish is characterized by a torpedo-shaped body with silver scales, a red line running from their snout, through the eye, back towards the middle of the body; and below the red line, a black line that runs the length of the fish to the tail. As they mature, a distinctive green/blue marking on top of the head develops. The fish attains a maximum length of 15 cm (5.9 in). They are active schooling fishes.

Habitat and threats

Denison's Barb or Red line torpedo barb is endemic to the Achenkovil and Chaliyar rivers. Specifically, they are found in four locations- Cheenkannipuzha (a major tributary of Velapattanam River), the Achankovil river, the Chaliyar river and near Mundakayam town. The species has an estimated range of 8,805 km2 (3,400 sq mi). P. denisonii is a benthopelagic species that is gregarious and shoals are known to occur in rocky pools with thick vegetation along their banks. They thrive in a subtropical climate in water with a 6.8–7.8 pH, a water hardness of 5–25 dGH and a temperature range of 65 to 79 °F (18 to 26 °C).

As reported by Practical Fishkeeping in January 2009, new research by team of scientists from India suggests that the species is being over-exploited for the aquarium trade, potentially placing it at risk of extinction.[2] In spite of being listed as Endangered by local assessment reports the fish had been promoted as an 'Export item' by several government agencies!

The fish was most likely collected and exported out of India in 1996. In 1997, it won the third prize at 'Aquarama 1997' (world exhibition on Ornamental fish) under the 'New Species Category'. By 2007-08 it constituted about 60- 65% of the total live ornamental fish exported from India which was worth US$ 1.54 million. Though the Government of Kerala banned the fishing and export of the endangered barb, it is yet to be listed under the National Wlidlife Protection Act.

Giving a shot in the arm of the conservationist is the news that the International Union for Conservation of Nature (IUCN) has in 2010 put the fish on their Red list regarded as the most comprehensive inventory of the global conservation status of plant and animal species since 1963. The species has been assigned Endangered (EN) status because of several reasons including restricted extent of occurrence (less than 300 km² km2), decline in habitat quality and number of mature individuals.

Name origins

The Denison's barb was originally described as Labeo denisonii by Francis Day in 1865. It is also referred to as Barbus denisonii, Crossocheilus denisonii, and Barbus denisoni. Common Names are Red Line Torpedo Barb, Denison's Barb, Roseline Shark, Red Line Barb, and Red Comet Barb.

In the aquarium

This fish is a relatively new addition to the fish keeping hobby. The Denison's barb is a schooling fish that is usually kept in groups. They tend to be peaceful but some have been known to be slightly aggressive around food, especially if kept in less space than they require. They eat bloodworms, shrimp, meat, fish flake and some vegetation. A similar fish, Puntius chalakudiensis is sometimes confused with this fish, but it is a larger, less colourful and a more aggressive species.

Breeding

Over the years many efforts have been made to breed this rapidly depleting species in captivity with limited success. Recent (2009) success has come from the work carried out at the Fisheries College, Kerala by Dr.T.V Anna Mercy. Equally if not more important breeding efforts have been carried out by the Chester Zoo and two amateur fish-lovers from Chennai- Mr. Venkatesh and Murali (as reported by The Hindu in October 2008). These efforts would pave the way for standardizing the process and would be a major boost to conservation and ornamental fish trade in India.

Synonyms

  • Barbus denisonii (F. Day, 1865)
  • Crossocheilus denisonii (F. Day, 1865)
  • Barbus denisoni (F. Day, 1865)

Source: wikipedia

Denison's barbs are very active so a large tank is required with open swimming spaces. Plants, rocks, and wood should also be added to provide hiding places. Lower temperatures are accepted by this fish so in warmer countries a heater may not be required.

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bubble updated Denison's Barb
2013-02-13 14:57:59 -0800
_Puntius denisonii_, commonly known as the **Denison's barb**, **red line torpedo barb**, **roseline shark**, **bleeding eye barb** or **Miss Kerala**, is a subtropical fish belonging to the _Puntius_ (barb) genus in the _Cyprinidae_ (minnow) family. It is endemic to the fast-flowing hill streams and rivers of the state of Kerala and South Karnataka in South India. They prefer a water temperature range of 15 to 25 °C (59 to 77 °F) and almost certainly live for over 8 years. Physical characteristics The fish is characterized by a torpedo-shaped body with silver scales, a red line running from their snout, through the eye, back towards the middle of the body; and below the red line, a black line that runs the length of the fish to the tail. As they mature, a distinctive green/blue marking on top of the head develops. The fish attains a maximum length of 15 cm (5.9 in). They are active schooling fishes.
bubble
bubble updated Denison's Barb
2013-02-12 18:13:53 -0800
_Puntius denisonii_, commonly known as the **Denison's barb**, **red line torpedo barb**, **roseline shark**, **bleeding eye barb** or **Miss Kerala**, is a subtropical fish belonging to the _Puntius_ (barb) genus in the _Cyprinidae_ (minnow) family. It is endemic to the fast-flowing hill streams and rivers of the state of Kerala and South Karnataka in South India. They prefer a water temperature range of 15 to 25 °C (59 to 77 °F) and almost certainly live for over 8 years. Physical characteristics The fish is characterized by a torpedo-shaped body with silver scales, a red line running from their snout, through the eye, back towards the middle of the body; and below the red line, a black line that runs the length of the fish to the tail. As they mature, a distinctive green/blue marking on top of the head develops. The fish attains a maximum length of 15 cm (5.9 in). They are active schooling fishes.
bubble
bubble posted on Denison's Barb
2013-02-12 18:21:22 -0800

Fish Specs

Scientific Name
Family
Cyprinidae
Environment
Fresh
Min Tank Size
50 gallons
Max Size
6.0 in.
Chemistry
6.8 - 7.8 pH
Temperature
65 - 79 °F
Temperament
Peaceful
Diet
Omnivore
Difficulty
Easy
Origin
India

Tanks (1)

65g Planted - Fresh water Aquarium