Bengal loach (Botia dario)

Family: Cobitidae

Bengal loach — a Cobitidae freshwater fish. Reaches 11.3–16.6 cm; keep at 23–26 °C.

Care parameters

Water temperature
23–26 °C
pH
6.5–7.5
GH hardness
5–12 dGH
Adult length
11.3–16.6 cm
Minimum tank
331 L
Water layer
Bottom-dwelling
Difficulty
Moderate
Temperament
Peaceful bottom-dweller

Species overview

Botia dario of the family Cobitidae is an aquarium-kept Cobitidae. Peaceful bottom-dweller and omnivore with a carnivorous tilt; sinking foods, it grows to 11.3–16.6 cm and prefers 23–26 °C water. Other Botia species in our database include Botia almorhae, Botia histrionica, Botia lohachata.

Native biotope

Habitat
Sandy stretches of slow rivers
Flow
Gentle current
Dissolved O₂
Tolerates moderate oxygen levels

Aquascape & hardware

Substrate
Fine sand for burrowing
Hardscape
Smooth stones and driftwood caves
Plants
Low-light tolerant plants

Temperament, diet & tankmates

Schooling
Loosely social; keep in small groups
Diet
Omnivore with a carnivorous tilt; sinking foods
Recommended tankmates
  • Similar-sized peaceful community fish — Similar size and water needs
Avoid keeping with
  • Much smaller fish — May outcompete or bully tiny tankmates

Breeding & notes

Sexual dimorphism
Females noticeably plumper when mature
Breeding method
Rare in home aquaria

Frequently asked questions

Is Bengal loach easy to keep?

A moderate-level species: peaceful bottom-dweller; stable water matters more than fancy equipment.

What temperature and water chemistry does Bengal loach need?

Aim for 23–26 °C. Room temperature stable range; 23–26 °C recorded range.

How big does Bengal loach get, and what tank size?

Full size is 11.3–16.6 cm. Minimum tank: 331 L, with open swimming space along its bottom-dwelling habits.

What does Bengal loach eat?

Omnivore with a carnivorous tilt; sinking foods. Vary the menu — quality flakes or pellets plus frozen or live foods.

Can Bengal loach live with other fish?

Peaceful bottom-dweller; loosely social; keep in small groups. Good company: Similar-sized peaceful community fish — Similar size and water needs. Keep away from Much smaller fish — May outcompete or bully tiny tankmates.

Where does Bengal loach come from?

It lives in sandy stretches of slow rivers. Gentle current; Tolerates moderate oxygen levels.

How does Bengal loach breed?

In the aquarium: rare in home aquaria. Females noticeably plumper when mature.