Trachelyichthys Exilis

Datasheet

General Description

The Pygmy Driftwood Catfish, scientifically known as Trachelyichthys Exilis, is a species closely resembling T. decaradiatus with key differences in eye position and humeral process morphology. With a maximum size of 8.0cm, these fish are rare in the hobby but occasionally found in specialized outlets. They hail from the Nanay river basin in Peru and belong to the Auchenipteridae family, favoring a diet of live and frozen foods like bloodworms and prawns, adaptable to small pellets or flakes.

Aquarium Setup

This species thrives in a densely planted aquarium, showcasing their vibrant colors in such environments. To create ideal conditions, it is recommended to use floating plants for light diffusion, as they do not favor bright lighting. Design the tank with open spaces amidst plant clusters to allow ample swimming room. The Pygmy Driftwood Catfish requires water with a pH range of 6.5-7.0, hardness of 8-15°dH, and a temperature between 22-25°C (see table).

Behaviour

Known to be non-aggressive towards their own kind, these catfish are best kept in groups and are compatible with a variety of tankmates barring extremely small fry. They thrive in South American biotope aquariums alongside peaceful species like tetras, dwarf cichlids, Corydoras sp., and smaller Loricariids, contributing positively to most community setups.

Feeding and Diet

The Pygmy Driftwood Catfish predominantly feeds on live and frozen foods but can adapt to small pellets or flakes. Unlike most Auchenipterids, they are diurnal feeders, actively foraging during daylight hours for sustenance such as earthworms, prawns, and bloodworms, ensuring a varied and nutritious diet.

Reproduction & Dimorphism

Limited data is available on the reproduction of this species, with internal fertilization being a common trait among Auchenipteridae members. Males exhibit a distinctively modified anal fin used similarly to a gonopodium found in livebearers, while gravid females are noticeably rounder than males, showcasing clear sexual dimorphism.

Habitat and Distribution

Native to the Nanay river basin in Peru, the Pygmy Driftwood Catfish inhabits the river and its tributaries, thriving in the freshwater conditions of South America. By mimicking their natural habitat in captivity, aquarists can maintain the well-being and natural behaviors of these captivating fish.