Checkered Barb - Oliotius oligolepis : Complete Fish Profile & Care Guide
Table of contents
Introduction
The charming Checkered Barb (Oliotius oligolepis) is a small in stature barb, which was recognized as Puntius oligolepis until its reclassification in 2019, and stands as one of the most underappreciated nano-sized barbs in the aquarium hobby.
With a maximum size of about 5 centimetres and a peaceful nature, this fish is an ideal choice for a variety of aquarium setups that include other peaceful or community-oriented tank mates.
The Checkered Barb is a captivating fish that brings a subtle splash of earthy hues to the aquarium. Their energetic and playful personalities make them a delight to observe as they gracefully navigate through the aquarium.
These barbs flourish when kept in a group of six or more individuals. As with many species, it is advisable to maintain a higher female-to-male ratio. This combination of the sexes can help reduce territorial aggression among the males and make for a more harmonious setup.
Although males may often display dominance against one another, these interactions rarely lead to physical harm. Observing these spontaneous rough-and-tumbles can be quite entertaining to watch.
A planted aquarium with plenty of hiding spots is ideal for Checkered Barbs, as, in our experience, these fish can be somewhat shy. They appear more comfortable and at ease when they have access to hiding places where they can nip off, too, for an occasional timeout.
Once they have settled in, their unique colours will intensify, creating a stunning display for any aquarium enthusiast.
These fish have a unique checkerboard pattern that runs along their body, which makes them stand out in any aquarium. The males are particularly colourful, with reddish-brown dorsal and anal fins edged in black, while the females have yellowish-brown dorsal and anal fins without the distinct black edges seen in males. With their striking appearance and lively personalities, Checkered Barbs are a delightful addition to any aquarium.
Checkered Barb Photos
Sexual Dimorphism
The sexual dimorphism in mature Checkered Barbs is pronounced, making it straightforward to differentiate between males and females based on their appearance.
Males display more vivid colours, with reddish-brown dorsal, pelvic and anal fins that are distinctly outlined in black. In contrast, females tend to be rounder in body shape, creamer body colouration and have yellowish to clear dorsal, pelvic and anal fins, which do not have as pronounced black edging that is characteristic of their male counterparts.
Quick Facts
| Scientific Name | Oliotius oligolepis |
|---|---|
| Year Described | 1853 |
| Other Names | Checker Barb, Chequer Barb, Checkerboard Barb, Island Barb |
| Kingdom | Animalia |
| Classification | Actinopterygii |
| Order | Cypriniformes |
| Family | Cyprinidae |
| Genus | Oliotius |
| Origins | Colombia , Indonesia |
| Max Size | 5 cm |
| Temperament | Peaceful |
| Aquarium Level | Bottom - Middle |
| Difficulty | Beginner - Intermediate |
| Shoaling | Yes |
| Best kept as | Groups 6+ |
| Diet & Feeding | Omnivore |
| Reproduction | Egg-Scatterer |
| Average Lifespan | Up to 8 Years |
Water Parameters
| Water Type | Freshwater |
|---|---|
| pH | 5.5 - 6.5 |
| GH | 1 - 10 |
| TDS | 36 - 215 |
| ℉ | 68 - 75 |
|---|---|
| ℃ | 20 - 23 |
Natural Habitat
The Checkered Barbs are primarily found in the western central region of Sumatra, Indonesia, and their exact distribution range still needs to be clarified. Current records mainly focus on their presence in the lower sections of the Aek Sibundong and Aek Garoga rivers within North Sumatra province.
It is suggested that the Batang Gadis drainage area and the encompassing National Park might represent the northern limits of their natural habitat. Moreover, they have been spotted in Lake Meninju, also located in Sumatra. These barbs prefer habitats of clear, well-oxygenated water like small pools, streams, lakes, rivers, and drainage ditches, all surrounded by rich overhanging vegetation.
Breeding
To breed Checkered Barbs, it is best to keep them in pairs rather than groups to avoid males fighting instead of breeding. It is also essential to simulate winter by keeping the fish at a lower temperature to induce spawning. The breeding aquarium should have somewhat acidic water and a low water level, with a mesh covering the bottom to protect the eggs from the parents. Fine-leaved plants or spawning mops should also be added to the tank.
To condition the fish for spawning, separate the males and females for about three weeks and feed them a varied diet containing lots of frozen and live food. Select the most colourful male and the fattest female for breeding and move them to the breeding tank. Spawning typically occurs in a plant chosen by the male the next morning, and the parents should be removed as soon as spawning is complete.
A spawning can result in up to 300 eggs, which typically hatch in 24-48 hours. Feed the fry on infusoria or powdered food until they become free-swimming, then switch to newly hatched brine shrimp once they are big enough to consume them. The fry will grow rapidly and can reach adulthood within 4-6 months.
Diet & Feeding
In their natural habitat, Checkered Barbs feed on a varied diet that includes diatoms, small insects, crustaceans, worms, algae, and decaying plant matter. Fortunately, these fish can quickly adjust to commercial aquarium foods such as high-quality flake foods, freeze-dried bloodworm and tubifex worms, artemia, algae wafers, and frozen foods.
In addition to commercial foods, Checkered Barbs will also consume decaying plant matter and naturally occurring algae within the aquarium. It is recommended to feed these fish a couple of times a day, providing an appropriate amount of food that they can consume within a few minutes.
Frequently asked questions
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