Arulius barb

Arulius barb
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Cypriniformes
Family:	Cyprinidae
Genus:	Puntius
Species:	P. arulius
Binomial name
Puntius arulius (Jerdon, 1849)
Synonyms
Systomus arulius (Jerdon, 1849) Systomus rubrotinctus (Jerdon, 1849) Barbus arulius (Jerdon, 1849)

The arulius barb (Puntius arulius) is a tropical freshwater fish belonging to the Puntius genus in the family (Cyprinidae). It is native to the Tambraparni River Kaveri River basin of south east India. Other common names include Tamiraparani Barb, Silas Barb and Longfin Barb.

Physical description

Adult fish are dark brownish olive on the back, becoming lighter on the sides to white on the ventral surface. It has a black, vertical blotch in the middle of its body, above the origin of its pelvic fin. It has a second black, vertical blotch above its anal fin, and a third black bar or blotch on the base of the caudal fin, though less well defined as the other two blotches. The fins are thin and transparent or translucent. Adults possess more pronounced colors than the juvenile. The adult male differs from a closely related filament barb species found in Tambraparni River basin, Puntius tambraparniei, and lacks the filament-like extensions to the branched dorsal-fin rays which lend to the incorrect use of the common name, longfin barb (Puntius filamentosus). It reaches an adult size of 4.75 inches (12.0 cm).

Habitat

All of the known material of P. arulius is from the upper reaches of the Kaveri River basin. The only recent collections have been at Kodagu. No specimens have been found at Srirangapatna, however, despite an extensive search conducted in March, 1996. Local fishermen failed to recognize photographs of the fish or the local name mentioned by Jerdon. Its native habitat is large streams, rivers, and lakes, with a pH of 6.0 - 6.5, dH of 10, and temperature 19°C to 25°C.

Conservation status

The conservation status of this species is currently unknown. However it was formerly listed in the 2000 IUCN Red List of Threatened Species as critically endangered.

Name origins

This fish was originally named Systomus arulius by Jerdon in 1849, and is also referred to as Systomus rubrotinctus, and Barbus arulius. The word arulius is derived from the name "aruli" used by local inhabitants.

In the aquarium

Though less common to the hobby than other related barbs, this peaceful, active, egg-laying fish is compatible with other related species in the home aquarium such as tiger barbs ( Puntius tetrazona), and rosy barbs (Puntius conchonius) and other fast swimming Cyprinid species of similar size. Also compatible with some cichlid species, but smaller fish such as neon tetras would be at risk of predation. As with many barbs, nippy behavior is common, but alleviated by keeping the fish in numbers of at least 5-6 individuals in the aquarium, while taking into account the space requirements of the adult size of 4-5 inches (10–12 cm).

See also

Aquarium Fish portal

• List of freshwater aquarium fish species

External links

• Photos of Puntius arulius (Fishbase)
• Arulius Barb Fact Sheet

References

• "Puntius arulius". Integrated Taxonomic Information System. http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=163632. Retrieved 11 March 2006. 
• Froese, Rainer, and Daniel Pauly, eds. (2006). "Puntius arulius" in FishBase. February 2006 version.
• Rohan Pethiyagoda & Maurice Kottelat. "A review of the barb of the Puntius filamentosus group (Teleostei: Cyprinidae) of southern India and Sri Lanka". The Raffles Bulletin of Zoology, 2005 Supplement No. 12: 127–144. http://scholar.google.com/scholar?hl=en&lr=&client=firefox-a&q=cache:nlfHRlFOC_UJ:rmbr.nus.edu.sg/rbz/biblio/s12/s12rbz127-144.pdf+author:%22Pethiyagoda%22+intitle:%22A+REVIEW+OF+THE+BARBS+OF+THE+PUNTIUS+FILAMENTOSUS+GROUP+...%22+. Retrieved February 5, 2006.