Gangetic climbing perch

Anabas cobojius

Also known as Gangetic koi, Koi (Bengali), Gangetic koi perch

FreshwaterFish

Care at a glance

Temperature
72–86°F
22–30°C
pH
6.0–8.0
Adult size
9.8 in
25 cm
Minimum tank
66 gal
250 L
Temperament
Mostly peaceful
Social behavior
Solitary
Tankmates
With caution
Swim level
Middle
Difficulty
Easy
Breeding
No record
Rarity
Rare
Family
Anabantidae
Origin
Ganges and Brahmaputra basins of India and Bangladesh, in ponds, ditches, and floodplains.

Overview

This large, hardy perch needs a 250 litre tank at 22 to 30 C with a pH of 6.0 to 8.0 and a tightly fitted lid, since it can climb and jump. It is a robust omnivore and predator, so feed earthworms, prawns, pellets, and vegetable matter, and expect it to eat any fish small enough to fit in its mouth. Keep it with similarly large, sturdy tankmates or on its own. It tolerates a wide range of conditions but still appreciates clean, well-filtered water.

In the wild

Lives in still and slow waters across the Ganges plain, including ponds, ditches, canals, and flooded fields. It is an extremely hardy air-breather that can survive in stagnant, low-oxygen water. During dry spells it can move over land to find new pools. It is a robust, adaptable fish rather than a delicate one.

Good to know

Anabas cobojius belongs to the family Anabantidae and is the larger Gangetic relative of the widespread climbing perch Anabas testudineus. It grows to around 25 cm and is a valued food fish in its native range, where it is known locally as koi. It is an obligate air-breather that drowns if it cannot reach the surface.

Did you know

Climbing perch are famous for surviving out of water for hours and walking across land on their gill covers and fins to reach a new pond.

Common questions

What size tank does a Gangetic climbing perch need?

A Gangetic climbing perch needs at least 66 gal (250 L). It spends most of its time in the middle.

What temperature and pH does a Gangetic climbing perch need?

A Gangetic climbing perch is comfortable at 72–86°F (22–30°C) with a pH of 6.0–8.0.

How big does a Gangetic climbing perch get?

An adult Gangetic climbing perch reaches about 9.8 in (25 cm).

Related species