Bagrichthys Macracanthus

Datasheet

General Description

The Black Lancer, scientifically known as Bagrichthys Macracanthus, belongs to the Bagridae family within the order Siluriformes. This species can grow up to 23.0cm and is characterized by an extended dorsal spine, from which it derives its vernacular name "lancer." It is identified by its unique physical features compared to other species of the genus.

Aquarium Setup

The Black Lancer is a nocturnal and shy species that thrives in a dimly-lit aquarium environment. To cater to its needs, provide ample hiding spots such as clay flowerpots, plastic piping, and driftwood. Although not mandatory, plants can be beneficial in reducing light exposure and offering protection. When housing multiple specimens or similar-sized catfish, create segregated territories within the tank. Ensure that the placement of the heater does not obstruct the fish's movement or resting areas, as this species dislikes strong water flow.

Behaviour

Known for its peaceful demeanor towards tankmates from different sections of the tank, the Black Lancer has a small mouth limiting it to consume only small prey. To enhance its visibility, consider keeping it with dither fish like larger rasboras, medium-sized barbs, or glass catfish. However, it can display territorial behavior towards benthic species, particularly males, who may not coexist peacefully except in large aquarium setups.

Feeding and Diet

In its natural habitat, the Black Lancer feeds on small benthic organisms and detritus. When kept in an aquarium, it readily accepts a varied diet, including small live or frozen foods like Artemia, Tubifex, and bloodworms. Additionally, high-quality sinking dried foods enriched with Spirulina or vegetable content should be regularly provided to meet its nutritional requirements.

Reproduction & Dimorphism

There is limited documentation on the reproductive behavior of the Black Lancer in captivity. In the wild, adults migrate to flooded areas during the wet season for spawning. Males exhibit distinguishable features such as a pointed genital papilla near the anal fin and longer barbels, while sexually mature females are slightly larger in size.

Habitat and Distribution

Typically, the Black Lancer inhabits large, murky rivers with slow-flowing, muddy substrates. During the wet season, the species moves to flooded riparian zones for spawning. This catfish species is native to Sumatra, with reported distribution in regions like Borneo, Java, and Indochina. Records also indicate its presence in river basins like the Chao Phraya and Mekong in Thailand.