Checker barb

Identity and search names

Single-species profile for Oliotius oligolepis. Puntius oligolepis is an older combination retained only as a search synonym. Search names: checkerboard barb, Puntius oligolepis

Environment and housing

Plant cover at the edges, a dark substrate, open central swimming room, gentle to moderate flow and a secure lid

Feeding and nutrition

Feeding ecology: Omnivore taking small invertebrates, plant matter and varied appropriately sized prepared foods

Feeding routine: Offer small varied meals once or twice daily and distribute food across the group

Breeding and reproduction

Egg scatterer among fine plants; adults provide no brood care and may eat eggs

Parental care: No parental care; adults may consume eggs and fry

System demands

Filtration: Use mature biological filtration sized for the adult stock and feeding load, with guarded intakes and a flow pattern the species can use without continual effort.

Aeration: Maintain strong gas exchange and stable dissolved oxygen, especially overnight, during warm weather, medication, crowding or any interruption to filtration.

Maintenance: Test ammonia and nitrite after changes or abnormal behaviour; remove waste from the occupied zone and perform regular water changes matched to temperature and mineral chemistry.

Detailed husbandry

Identity scope

Single-species profile for Oliotius oligolepis. Puntius oligolepis is an older combination retained only as a search synonym.

Adult size and space

Up to about 5 cm total length. At least 75 L with horizontal swimming room for eight or more. Adult dimensions, activity, social structure and waste production matter more than sale size.

Social structure

Keep at least eight to ten; larger groups reduce shyness and diffuse minor chasing

Swimming zone

Primary zone: Middle and lower water. Keep that zone usable and provide unobstructed feeding access, movement and refuge appropriate to the species.

Feeding ecology

Omnivore taking small invertebrates, plant matter and varied appropriately sized prepared foods

Feeding plan

Offer small varied meals once or twice daily and distribute food across the group

Water stability

Maintain 22–27 °C; pH: 6.0–7.5; hardness/minerals: Soft to moderately hard. Stable temperature, oxygen, mineral chemistry and nitrogen-cycle control matter more than chasing a single exact number.

Habitat structure

Plant cover at the edges, a dark substrate, open central swimming room, gentle to moderate flow and a secure lid

Compatibility plan

Use peaceful similarly sized fish; avoid large predators and slow long-finned fish where chasing or nipping persists

Breeding plan

Egg scatterer among fine plants; adults provide no brood care and may eat eggs. Parental care: No parental care; adults may consume eggs and fry. Do not trigger reproduction without capacity for aggression, eggs or fry and lawful long-term placement.

Quarantine

Quarantine new fish in a separate cycled aquarium with dedicated nets, containers and siphons. Match temperature and mineral chemistry gradually, confirm normal feeding, respiration, skin, fins and waste, and never pour transport water into the established aquarium.

Welfare checks

Check shoal cohesion, fin damage, feeding access, body condition and whether one fish remains isolated or persistently chased.

Biosecurity and release

Never release fish, eggs, fry, aquarium water, sediment, plants or foods into drains, dams or natural waterways. Check the exact accepted identity in current BICON, Australian live-fish import requirements and applicable South Australian rules before import, sale or movement; import eligibility does not authorise release or wild collection.

Main risk

A tiny group is not adequate. Under-grouped checker barbs can become nervous or redirect repeated chasing at the weakest fish.

Adult Projected Load

Moderate for the planned adult stock. Calculate filtration, oxygen and swimming space from the full adult size (Up to about 5 cm total length) and social group (Keep at least eight to ten; larger groups reduce shyness and diffuse minor chasing), not the juvenile sale size.

Filtration

Use mature mechanical and biological filtration with protected intakes and enough turnover for the adult group while preserving species-appropriate current and refuge.

Aeration

Provide strong gas exchange and backup aeration; increase oxygen support before warm weather, heavy feeding, crowding, medication or filter interruption reduces the safety margin.

Maintenance

Remove uneaten food and bottom waste, clean prefilters before flow falls, test ammonia and nitrite after changes, and perform regular temperature- and chemistry-matched water changes.

Overridable Warnings

A tiny group is not adequate. Under-grouped checker barbs can become nervous or redirect repeated chasing at the weakest fish.

Welfare and risk

Check shoal cohesion, fin damage, feeding access, body condition and whether one fish remains isolated or persistently chased.

Sources

• Eschmeyer’s Catalog of Fishes — Oliotius oligolepis — Accepted name, synonym and taxonomic placement
• SeriouslyFish — Oliotius oligolepis — Adult size, Sumatran habitat, social group and reproductive care
• IUCN Red List search — Oliotius oligolepis — Conservation and provenance cross-check
• Australian Government — importing live ornamental fish — Australian import pathway and biosecurity requirements
• PIRSA — South Australian noxious fish list — South Australian possession, trade and release context
• Eschmeyer’s Catalog of Fishes current search — Oliotius oligolepis — Current accepted-name, synonym, distribution and habitat cross-check