Longfin Barb Tropical Fish Information

Puntius arulius
Longfin Barb
Behaviour Peaceful active schooling fish
Typical size 10cm
Max size 12cm
Tank Area All
Min Tank Size 80cm
Min Number 3
Temp Min: 18℃ Max: 26℃
Feeding Flake, frozen, live foods
pH Range 6-8
Hardness vs,s,m,h
Longfin Barb Puntius arulius
  • Longfin Barb Puntius arulius - thumbnail
  • Longfin Barb Puntius arulius juvenile - thumbnail
  • Longfin Barb Puntius arulius Adult - thumbnail

Longfin Barb (Puntius arulius)

Longfin Barb Tropical Fish Learn all about the Longfin Barb's feeding habits and food types, its behaviour, its origins, its natural habitats, is it male or female, breeding advice and information, suitable tank mates, its sizing and growth range, minimum tank size, water PH and more. Use our fish community creator tool to plan your tank set up and ensure that the Longfin Barb is the right fish for your aquarium.

The Longfin barb is an understated aquarium fish due to its often drab colours when young. Given the chance to grow and mature in an aquarium it will develop a highly attractive iridescent body colouration, reddish fins and a long flowing dorsal fin. The longfin barb is a shoaling fish which is best kept in medium to large aquariums with open swimming spaces and hiding spots amongst wood and/or hardy plants. Although it prefers softer water, it will acclimatize easily to a wide range of conditions, including unheated aquaria.

Longfin Barb Facts

Family Cyprinidae (Carps & Minnows) | Synonyms Barbus arulius, Systomus arulius | Other names Arulius Barb, Silas Barb | Origin Asia, Southern India | Breeding Egg scatterer, spawns near the surface. Difficult to breed, requires a very large densely planted tank. Males show bristles/markings around the face when ready to spawn. | Natural Water Conditions pH 6-7, very soft to medium | Natural Habitat Large streams, rivers and lakes | Sexing Males have longer dorsal fins



Longfin Barb Help and Advice

If you have a question about keeping Longfin Barb's then please use our Longfin Barb help forum. Join 100's of other fish enthusiasts with 1000's of years experience between them caring for and keeping fish like these.


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Check Tankmates for the Longfin Barb fish species

Create a test community that includes the Longfin Barb fish species and other types you'd like to introduce - Assess tank size suitability based on filter type and volume, possible negative interactions and warnings.

Please check your water type for compatibility with your fish, which can be found on the Longfin Barb information box.
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