Banjomouth Catfish

Adults of this species reach a modest 2 cm in length. A distinguishing feature of this catfish is its flattened body, which contrasts with a relatively large head and a slender caudal peduncle. The pectoral fins of the fish are modified: their first rays are noticeably thickened and have transformed into sharp spines. These structures do not serve for locomotion but perform a defensive function, protecting the catfish from potential small predators. Additional protection is provided by hard dermal coverings, creating a armored feel. The fish's coloration is typically dark gray or brownish. Sexual dimorphism in Acanthobunocephalus nicoi is weakly expressed, and external differences between males and females are practically absent. This miniature catfish outwardly resembles a popular species of its family – the Banjo Catfish, which also has a “musical” name – Guitarrita.

This fish originates from South America, specifically from the upper Orinoco River basin, encompassing territories in Venezuela and Colombia, where its range is limited. It prefers shallow areas of small rivers and streams that flow under a dense canopy of tropical forest, staying in the bottom layer. In such places, the Banjomouth Catfish finds refuge among dense aquatic vegetation, under snags, and among natural plant debris such as fallen leaves and branches.

This species leads a secretive, predominantly nocturnal lifestyle. The fish are peaceful and do not show aggression towards tank mates; however, due to their miniature size, it is not recommended to keep them with large or active species that could swallow them. Intraspecific conflicts are practically absent, so both solitary and group keeping are possible.

This catfish leads a predominantly nocturnal lifestyle, so during the day, it actively seeks shelter. When setting up an aquarium for it, it is crucial to provide a sufficient number of places where it can hide. These can be dense plant thickets, various snags, or other natural and artificial decor elements. Another key element of the setup is a sandy substrate, in which the catfish will not only dig for food but also burrow, using it as a hiding place. Acanthobunocephalus nicoi is undemanding in its diet and is an omnivorous species. It readily accepts most sinking foods of appropriate size. It is recommended to feed the catfish shortly before the aquarium lighting is turned off. When cohabiting with other species, it will pick up leftover food from its tank mates. Optimal conditions for its keeping include acidic and soft water with a temperature not exceeding 25°C. Regular aquarium maintenance is critically important to prevent the accumulation of organic waste, which is especially significant for bottom dwellers. It is well compatible with many other fish species of comparable size that prefer to inhabit the water column or near its surface.

In its natural habitat, it feeds primarily on zooplankton. In aquarium conditions, it accepts most types of high-quality sinking foods for bottom-dwelling fish. Given the species' nocturnal activity, feeding is recommended immediately before turning off the lighting, so that the fish have time to find food.

Based on available sources, a separate block cannot be compiled: the data is insufficient or contradictory. The entry can be updated later when verified information becomes available.

Based on available sources, a separate block cannot be compiled: the data is insufficient or contradictory. The entry can be updated later when verified information becomes available.

When purchasing, choose active individuals with undamaged skin and fins. It is important to ensure there are no external signs of parasitic or bacterial infections, such as ulcers, film, or unnatural spots on the body. Since the fish tend to be secretive, they may be in hiding in the store, which is a normal state for a healthy individual.