Longnose Loach (Acantopsis dialuzona)

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Longnose Loach
Acantopsis dialuzona
Longnose Loach (Acantopsis dialuzona)
Name Longnose Loach
Name Lat. Acantopsis dialuzona
Family Longfin Loaches
Family lat. Cobitidae
Order Carps
Order lat. Cypriniformes
Origin Southeast Asia
Habitat Streams, rivers
Diet Carnivore
pH 6.0-8.0
Behavior Peaceful
Keeping Individual, group
Care Level Moderate
Reproduction Oviparous
Breeding None reported
Life Span 10-12 years
Protection No
Metric Units
Size 20 cm
Temperature 23-28 °C
Hardness 1-12 °dH
Aquarium 100 cm / 200 l
US Units
Size 7.9"
Temperature 73-82 °F
Hardness 18-214 ppm
Aquarium 50 gal

Distribution and habitat

Proboscis loaches are widely distributed in Vietnam, Laos, Cambodia, Thailand, Malaysia and Indonesia. They live mainly in flowing waters with soft sandy bottoms, but can also be found in floodplains and rice fields during the rainy season.

Maintenance

The aquarium should have dense planting, shady hiding places (roots, stones, caves), some subdued light (floating plants) and a medium strong current. To be able to burrow in, they need a soft, fine-grained, 5-10 cm deep substrate (sand, round gravel), which can be covered with some foliage (e.g. sea almond tree or oak leaves).

No ammonia, ammonium and nitrite should be detectable, the nitrate value should not exceed 100 mg/l. To ensure the water quality and oxygen content, a filter and heater adapted to the aquarium size is required, as well as lighting for the species-appropriate day-night rhythm of the animals.

Diet

They feed mainly on bottom-dwelling small crustaceans (bosmids, ostracods, etc.). The food supply consists of live food, such as cyclops, daphnia, artemia, bosmids, tubifex and mosquito larvae, which is also eaten freeze-dried or in frozen form, plus commercially available frozen special food mixtures, supplemented with high-quality dry food (pellets, tablets, granules and flakes), which is well accepted

It is recommended to feed small portions several times a day. Only as much should be fed as is eaten within a few minutes. A regular and varied diet promotes health and prevents deficiency symptoms.

Behaviour and compatibility

They are peaceful and sociable fish that can be well socialized with not too small fish. At least 5, but preferably more animals must be kept together. Older, individually kept animals sometimes behave aggressively

Basically, only mutually compatible fish species with similar demands on water quality and water temperature may be socialized.

Sex dimorphism

There are no known external distinguishing characteristics.

Reproduction and breeding

There are no known reports of successful breeding in the aquarium.

Important

According to their origin, they come in different color variations.

They are mainly crepuscular to nocturnal and remain mostly hidden in caves or under stones and roots during the day

When disturbed or threatened, they burrow into the soft substrate at lightning speed. They can be lured out of the bottom with food. They are able to adapt their color to the substrate.

When catching them, use nets with as fine a mesh as possible so that the subocular spines (under the eye), which are normally hidden under the skin, do not get caught.

The well-being of the fish should be checked regularly. Temperature should be checked daily, pH, hardness and nitrate levels at least every 14 days. Regular partial water changes are recommended, even if the contaminant level has not yet reached the upper limit. Sudden changes in water quality should be avoided. Newly introduced fish must be accustomed slowly to the water in the aquarium.

Further literature can be found in your pet store.

References

Text: petdata; Image: Franz Lowak

Source: BMELV (1998): Tierschutzgutachten - Haltung von Zierfischen (Süßwasser); RIEHL & BAENSCH (2006): Aquarien Atlas Bd. 1, Mergus Verlag; ENGELMANN (2005): Zootierhaltung - Tiere in menschlicher Obhut: Fische, Verlag Harri Deutsch

  • Gemäß § 21 Abs. 5 Tierschutzgesetz idgF