Reticulated hillstream loach (Sewellia lineolata)

Family: Balitoridae

A peaceful algivore balitoridae from the Mekong basin of Southeast Asia (Vietnam and Laos) — moderate care.

Care parameters

Water temperature
18–26 °C
pH
6.5–7.5
GH hardness
5–15 dGH
Adult length
4–5.7 cm
Minimum tank
57 L
Water layer
Bottom; rests and forages low; keep 3+
Difficulty
Moderate
Temperament
Peaceful
Origin
东南亚湄公河流域(越南、老挝)

Species overview

Sewellia lineolata of the family Balitoridae is an aquarium-kept Balitoridae. Peaceful and algivore; quality prepared foods with variety, it grows to 4–5.7 cm and prefers 18–26 °C water. Other Sewellia species in our database include Sewellia albisuera, Sewellia breviventralis.

Native biotope

Habitat
Clear streams, rivers and still waters
Flow
Strong current with heavy aeration
Dissolved O₂
Demands high dissolved oxygen

Aquascape & hardware

Substrate
Gravel
Hardscape
Driftwood, water-worn stones and shelters that mimic the native biotope
Plants
Hardy plants on hardscape; keep the floor open

Temperament, diet & tankmates

Schooling
Keep 3+; larger groups settle better
Diet
Algivore; quality prepared foods with variety
Recommended tankmates
  • Amur False Gudgeon — Similar size and water needs
  • China-Bitterling — Similar size and water needs
  • Acanthorhodeus chankaensis — Similar size and water needs
Avoid keeping with
  • Large aggressive cichlids — Bullying and injury risk
  • Known fin nippers — Constant stress and fin damage

Breeding & notes

Sexual dimorphism
Males are typically slimmer and more intensely colored; females fuller-bodied
Breeding method
Spawning; condition with rich foods and simulate seasonal changes

Frequently asked questions

Is Reticulated hillstream loach easy to keep?

Intermediate difficulty. Peaceful; keep 3+; larger groups settle better.

What temperature and water chemistry does Reticulated hillstream loach need?

Hold 18–26 °C and keep it stable — community-standard range; verify locally. Standard heater to hold the mid-range steadily.

How big does Reticulated hillstream loach get, and what tank size?

Full size is 4–5.7 cm. Minimum tank: 57 L, with open swimming space along its bottom; rests and forages low; keep 3+ habits.

What does Reticulated hillstream loach eat?

Algivore; quality prepared foods with variety. It forages naturally over gravel, so let some food reach the bottom.

Can Reticulated hillstream loach live with other fish?

Yes, with care. Peaceful — pair it with Amur False Gudgeon — Similar size and water needs, China-Bitterling — Similar size and water needs, Acanthorhodeus chankaensis — Similar size and water needs and skip Large aggressive cichlids — Bullying and injury risk, Known fin nippers — Constant stress and fin damage.

Where does Reticulated hillstream loach come from?

Its home waters are 东南亚湄公河流域(越南、老挝) — clear streams, rivers and still waters, with strong current with heavy aeration.

How does Reticulated hillstream loach breed?

In the aquarium: spawning; condition with rich foods and simulate seasonal changes. Males are typically slimmer and more intensely colored; females fuller-bodied.