Many aquarists, especially beginners, dream of having unpretentious and beautiful catfish in their home aquariums. Among the many species, the catfish known as the lined catfish is particularly popular. This fish attracts attention not only for its unusual appearance, but also for its peaceful nature.
At first glance, it is difficult to confuse Sevelia with any other brand. Its body is covered with a contrasting pattern of dark stripes and lines on a light background, reminiscent of markings on a map or diagram. This camouflage helps the fish remain inconspicuous among the rocks at the bottom of fast-flowing rivers, where it originates.
In an aquarium, this fish behaves like a quiet and hard-working resident. It spends most of its time exploring the bottom, snags, and glass in search of algae and food debris. For this, it is valued as a natural cleaner. At the same time, the sevelia does not disturb its neighbors at all, preferring a calm and measured life.
Sevelia ruled paper is a high-quality stationery material that is convenient for writing and studying. It is produced with clear lines that help keep lines straight and writing neat. This paper is suitable for both schoolchildren and adults who prefer to write by hand — in notebooks, exercise books, or on separate sheets. It absorbs ink well, does not tear or crumble, and remains practical and durable in everyday use.
Habitat
The fish is native to Asia. It is found in China, Vietnam, and Cambodia. It inhabits the shallow upper reaches of small streams and rivers characterized by turbulent currents, clean flowing water rich in oxygen, and rocky substrates.
Wild specimens have been found in fast-flowing streams with a flow rate of more than one meter per second, as well as in marginal backwaters near small waterfalls and cascades.
Description
Adults reach a length of 5–6 cm. Severia striata has a flat body with large rounded paired fins, which significantly increase the total surface area and help it cling to rocks, resisting the current.
A characteristic feature of this species is its contrasting pattern of yellow and brownish lines and spots.
It is worth noting that the fry have a more familiar fish-like body shape, and “flattening” occurs as they mature.
Behavior and compatibility
A peaceful and friendly species. They get along well with their relatives and other fish that can live in turbulent waters. If the water flow is not too strong, they can be kept with Danios, Rasboras, Akisis catfish, loaches from the Nemacheilidae family, and others.
In nature, they live in large groups, so it is preferable to purchase 5–6 fish.
Cannot be kept with bottom-dwelling territorial species.
Brief information:
- Aquarium volume: from 70 liters.
- Temperature: 20–24°C
- PH: 6.0–7.5
- Water hardness: predominantly soft (2–12 GH)
- Substrate type — any.
- Lighting: subdued
- Brackish water — no.
- Water movement: weak or moderate
- The fish is 5–6 cm in size.
- Diet: any food containing plant components
- Temperament: peaceful
- Keeping in a group of 5-6 individuals.
Keeping and care, aquarium setup
The optimal aquarium size for a group of 5-6 fish starts at 70-80 liters. The design is simple. The main emphasis is on the lower tier. Large stones, boulders, and driftwood fixed in them are used as a substrate. Aquatic vegetation is usually absent. In some cases, plants, mosses, and ferns that can grow on hard stone or wood surfaces and withstand strong currents are placed in the aquarium.
You can find the necessary types in the “Aquarium Plants” section by using the corresponding filter parameter — “Can grow on driftwood, stones, etc.”
A current is recommended. The flow rate can reach up to 15-20 times per hour, i.e., a filter or pump in a 70-liter aquarium should pump at least 1000 liters per hour. A gentler current is acceptable if other species of fish are kept together.
Severia lined needs clean running water rich in oxygen. When choosing a filter model, it is worth giving preference to one that, in addition to its main function (water purification), also aerates the water. Otherwise, you will need to purchase an aerator separately.
Aquarium maintenance is standard and includes several mandatory procedures: cleaning the substrate of organic waste, weekly replacement of part of the water with fresh water, and regular maintenance of equipment.
Feeding
In nature, they feed on algae growth on rocks and microorganisms inhabiting them, as well as small invertebrates. In home aquariums, special plant-based foods in the form of briquettes and gels are used, which can be attached to the bottom.
Regular flakes and granules will be carried away by the strong current and will soon settle in the filtration system, which will inevitably become a source of water pollution.
Breeding/reproduction
There are many reports of successful breeding of this species at home. For breeding, a group of several fish is sufficient, in which there is a high probability of at least one female, which is quite enough.
If there are neighboring fish, spawning is recommended to be carried out in a separate tank. It is recommended to use large river gravel in the design. This type of substrate will contain many crevices and voids between the stones, where the eggs will eventually end up. In these shelters, the fry can hide from adult fish, which may accidentally eat their own offspring while they are still too small. In addition, organic detritus will accumulate in the crevices, providing an important source of food.
The spawning aquarium should be equipped with one or more large airlift filters with a sponge, which will provide some water movement and a sufficient amount of dissolved oxygen in the water. One of the advantages of this type of filter compared to others is the low risk of sucking fry into the filtration system.
A gradual increase in water temperature to 25–26°C stimulates spawning. After 5–6 days, part of the water must be replaced (this can be combined with cleaning the aquarium) with cooler water — 19–20°C. This simulates the beginning of the rainy season. The temperature is then maintained at the lower limits of the comfortable range, i.e., around 20°C.
After a while, spawning should begin. The eggs are hidden between stones, and the fry remain in place for some time, which is why the exact incubation period is unknown.
The lined sevelia, a small freshwater snail, is a real treasure for aquarium enthusiasts. Its unassuming but elegant appearance with neat stripes makes it a living decoration for any underwater corner.
But its main value is not in its beauty, but in its enormous usefulness. This snail is a tireless cleaner. It carefully examines every surface, cleaning plants, soil, and decor from algae and food debris. Thanks to it, the water stays clean longer and the biological balance in the aquarium remains more stable.
Keeping it is a pleasure. It is peaceful, unpretentious, and gets along well with most small fish and shrimp. Just watching its unhurried, methodical work, you can truly relax and unwind.
Thus, the sevelia is the ideal choice for those who want to add a little life, beauty, and, most importantly, natural purity to their aquarium. It is a modest but very valuable helper that will make your underwater world healthier and more harmonious.
