Kryptopterus minor

Aquarium fish: Kryptopterus minor (Kryptopterus minor)
Size: 8 cm
Origin: Asia
Water temperature: 21-26 ° C
Aquarium volume: 85 l

Kryptopterus minor (Kryptopterus minor) – small, freshwater aquarium fish from the catfish family, characterized by a transparent body.


The species comes from Asia. It lives in clean rivers and streams from eastern India through Thailand and Malaysia to Java, Sumatra and Borneo.

Characteristics and disposition

The glass catfish reaches 8 cm in length. These atypical catfish have an elongated, laterally flattened body that is almost transparent.

The color of the body reflects the mood – fish are milky white when stressed and in bad condition. Ventral and dorsal fins atrophy, anal fin runs along the entire torso. Gender of fish indistinguishable. For many years it was imported and marketed as Kryptopterus bicirrhis, a very similar but larger species. The real bicirrhis is very rarely found in home and shop aquariums.

Kryptopterus minor are peaceful and shy. Unlike other catfish, they swim in the middle of the water. Most often they stay practically motionless in an oblique position, only moving their tail. A shoal species. A minimum of 6 is recommended for the aquarium.

In smaller amounts, he will be stressed, hide behind decorations and even refuse to eat. Sensitive to drugs and pollution.

Nutrition and feeding

Catfish eats live food more eagerly, but they can also be given frozen food supplemented with a dry mix. Has difficulty ingesting food from gout.


These daytime catfish require a reservoir of at least 90 x 30 x 30 cm, not very densely planted, with ample swimming space.

They like to stay among floating plants and a strong current of water. They are sensitive to water quality, require weekly water changes and efficient filtration. In a general aquarium, razors, most tetras, smaller labyrinth fish and cichlids will be good company.


This species is rarely reproduced in aquariums and little information is available on this subject. Most of the commercial fish are harvested or farmed.

They breed seasonally, a simulation of the rainy season can encourage them to spawn. It will be helpful to raise the temperature by a few degrees and a large change of soft water as well as plentiful feeding with live food.


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