Kryptopterus: Greek, kryptos = hidden.
Kryptopterus minor is a sensitive fish which requires stable conditions of a high standard. There aquarium must be fully mature and without any trace of ammonia or nitrite, nitrates must be kept below 20ppm (mg/l) if the fish are to thrive.
Kryptopterus minor only has a small mouth and this obviously has an effect on its diet because their food is swallowed whole and not broken up. Small live inverts such as daphnia, cyclops, brine shrimps and pre cleaned tubifex worms make the ideal diet. Most individuals will accept frozen food and a few may even accept high quality flake or pelleted food, but this cannot be relied upon.
Kryptopterus minor is peaceful but quite a shy and timid species. The fish must be kept in a group of at least five other individuals and only with other quite fish.
There are no known external differences between the sexes.
Not known in the home aquarium.
Near threatened. Kryptopterus minor has been widely over fished and its habitat in the peat swamps is being lost. Wild populations are showing a downward trend. Of the very few fish being sold in the aquatic trade the overwhelming majority are commercially bred and don't come from the wild.
Kryptopterus minor has been confused with the far more widely available Kryptopterus vitreolus in the aquatic trade. As a result it is far more likely that your fish is actually the latter. Kryptopterus minor is almost completely absent from the aquatic trade.
pH: 6 -7
dGH: 3 - 10
Temperature: 22 - 28°C (72 - 82°F)
Size: 7cm (3in)
Min tank size: 100 litres
Difficulty level: Intermediate
Aquarium type: Community
Swimming level: Lower & middle.
Origin: Western Borneo.
Habitat: Peaty streams and swamps in lowland forests.
Species: K. minor, Roberts, 1989
Other common names: