Blue Glass Catfish

Outwardly, this catfish resembles its close relatives — the Glass Catfish and the Spotted Glass Catfish. A distinguishing feature of the Blue Glass Catfish is its larger size, as well as its unique blue or bluish body tint. Adult specimens can reach up to 14 cm in length. Their body is elongated and flat, with a long anal fin extending from the belly to the tail. Two expressive large barbels on the head are actively used to search for food in murky water. Sexual dimorphism in the species is weakly expressed: obvious external differences between male and female are practically absent.

Its natural habitat extends across Southeast Asia, covering the Malay Peninsula (southern regions of Thailand and northern Malaysia), as well as the Greater Sunda Islands, including Sumatra, Borneo, and Java. These fish prefer to live in rivers and streams where the water is highly turbid and the bottom is rich with submerged snags.

Despite its predatory nature, this fish has a peaceful and calm disposition, coexisting perfectly with other non-aggressive species of similar size. However, it is worth remembering that any small fish capable of fitting into the catfish's mouth will inevitably be eaten. They prefer to live in groups of 3–4 individuals, which contributes to their psychological comfort.

For comfortable keeping of a group of 3–4 individuals, an aquarium of at least 150 L is recommended. The choice of decor is not critical, but experience shows that catfish will feel calmer with dim lighting and the presence of several shelters, which will help them not become overly timid. It is important to maintain stable water parameters, as the Blue Glass Catfish is demanding regarding conditions. Sharp fluctuations in temperature and hydrochemical indicators are unacceptable. This requires regular aquarium and equipment maintenance, as well as preventing the accumulation of organic waste.

This carnivorous predator feeds on small invertebrates, crustaceans, and small fish in nature. However, in aquarium conditions, it readily switches to popular dry foods such as flakes and granules. For a complete diet, it is recommended to include live or frozen foods several times a week, such as Artemia, Daphnia, bloodworms, or small earthworms.

To date, successful cases of breeding the Blue Glass Catfish in home aquariums have not been recorded. These fish are supplied for sale from specialized commercial fish farms.

When kept in favorable conditions, fish rarely experience health deterioration. The occurrence of diseases usually indicates problems in keeping, such as polluted water, poor quality food, or injuries. In most cases, eliminating the root cause leads to recovery. However, sometimes medication may be required. Detailed information on symptoms and treatment methods can be found in the section "Diseases of aquarium fish."

When purchasing, choose individuals with a completely transparent body without visible cloudiness, white spots, or skin damage. A healthy fish should show activity as part of a group, as solitary catfish often experience severe stress and can be weakened. Avoid specimens with sunken bellies or signs of emaciation, as they adapt very poorly to new conditions. Given that the species is predominantly supplied from farms, it is important to check for signs of bacterial infections, which often manifest as redness or erosions on the fins.