Fish Tank Maintenance Tips: Try to change some of the water in the tank on a regular basis. Small frequent (weekly or every two weeks) water changes are better than infrequent large water changes. Small water changes will cause less stress and shouldn’t interfere with the biological cycle in the tank. If you have a larger tank, get a Python Vacuum or a Lee’s Premier Ultimate Gravel Vac. These vacuums make doing water changes a breeze. Gravel vac only half of the tank with each water change. Switch sides on the next water change.
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The black ruby barb (Puntius nigrofasciatus) or purplehead barb is a tropical fish belonging to the minnow family (Cyprinidae). Originating from Sri Lanka in forested streams from the Kelani basin to the Nilwala basin, they are found in streams on hills around 1000 ft (300 m) in elevation. The brightly colored population introduced to Mahaweli at Ginigathena, Sri Lanka are said to have diminished in number due to the aquarium export trade. It was originally named Barbus nigrofasciatus.
Black ruby barbs natively live in a tropical climate among cool, shady quietly-flowing forested streams with either gravel or sand substrates. Their diet mainly consists of filamentous algae and detritus. They prefer water with a 6.0–6.5 pH, a water hardness of 5–12 dGH, and a temperature range of 72–79 °F (22–26 °C).
The fish has commercial importance in the aquarium hobby, and are successfully bred in captivity. They are also used to create hybrid forms of “tiger barbs” for the aquarium trade.
An egg-scatterer, the fish spawn more than 100 eggs in shallow water among the plants. The eggs hatch in 1 to 2 days and then will be free-swimming after 24 hours.
Plenty of room should be provided for this fish, with plenty of light with a shallow covering of floating plants and ample vegetation (half to two-thirds of the tank area). A layer of humus should be left on the bottom. This species is good for keeping with other barbs and similar fish. In captivity, the fish are omnivorous, with a healthy appetite.