▷ Delta-winged dwarf catfish in the aquarium | All information and details

Data sheet delta-winged pygmy catfish

German name:
Delta winged catfish

Scientific name:
Hara jerdoni

Origin:
Indian Subcontinent (Nepal, India, Bangladesh)

Size:
Body length up to 4 cm

Aquarium

Length:
Length from 40 cm width

Contents:
from 100 liters

water values

Temperature:
18°-28° C

pH:
6.5 – 7.5 (ideally 7)

GH:
8° – 15° dH

Behave

Area:
lower area

Lining:
Omnivores or carnivores (frozen and live food, food tablets, flake food)

Behave:
Schooling fish, sociable, peaceful

Number:
Group housing, at least 5 – 10 animals

Difficulty level:
Beginner

Hara jerdoni, delta-winged dwarf catfish, are patterned brown and black and grow to a size of 2 to 3 centimeters. 2 to 3 animals should be kept together. Because they are very small, larger groups are also possible, depending on the size of the aquarium. However, they are not schooling fish, but rather loners.

During the day they are very sluggish and lazy. They become active at dusk and at night. They like to lie on fine leaves, eg on chickweed.

Hara jerdoni primarily eat meat. Pronounced green fodder is not eaten. Live or frozen food is particularly popular. They also get their share of this during the day. Otherwise they search the whole aquarium for food at night. Some animals also go for granules, flakes, food tablets, etc., some even eat green fodder, other animals only eat live food.

In a community tank you should feed about 15 minutes before the lights go out so that the catfish get enough food. It is better to keep them in a species tank or just with other calm animals. Otherwise they run the risk of starving or dying of stress.

Hara jerdoni need clean, oxygen-rich water with a good current and slightly lower temperatures. They can be socialized with other fish that also prefer cooler water with strong currents, eg C. barbatus. There they feel really comfortable and can also be seen constantly, in contrast to the animals that are kept in warmer still water tanks. While most of the day they hang somewhere up in the bushes in the current, occasionally they head out into the open water to surf the current.

Hara jerdoni can be tricky during the adjustment period. Apparently they are prone to stress, eg from trapping and from new water values. Some of the animals lose their coloring and even get almost white spots. Some animals often die during the acclimatization period. Possibly. In addition to the stress of catching, injuries when catching such small animals also play a role. Possibly they are better fished with a glass from the sales tank than with the usual fishing nets.

There should be shelters and caves in the aquarium under which Hara jerdoni can hide during the day. The soil should be sand, eg light quartz gravel with a grain size of 0.2 – 0.6 mm.

Aquariums from 30 centimeters in length are suitable. The aquarium size basically depends on the number of Hara jerdoni.

In a 30x20x20 centimeter aquarium with many plants as hiding places, 2 to 5 Hara jerdoni can be kept, depending on the population. A mat filter with air lift can provide the necessary oxygen content. A heater is not necessary. In summer they can also cope with temperatures of up to 30° for a short time.

In a 54 liter aquarium, for example, 3 Hara jerdoni can be kept together with approx. 20 bee shrimp and some red ramshorn snails.

Hara jerdoni lay small reddish eggs on leaves.

General information about hara hara

Hara hara have a grey-black pattern and grow to at least 4 centimeters. They are more active than Hara jerdoni, not nearly as shy and often out and about in the aquarium during the day. Most of the time they jump over the ground “in spurts”.

They push themselves off the ground with their pelvic fins and thus advance a few centimetres. They stay mainly at the bottom and do not swim in the middle to upper water regions at night, as some Hara jerdoni do.