The Ninja Woodcat, scientifically known as Tatia musaica, is a unique and relatively obscure species of catfish native to the freshwater rivers of South America, specifically found in Colombia. This fish is particularly noted for its striking appearance and nocturnal habits, making it a fascinating addition to any aquarium setup that replicates a natural riverine environment.

Tatia musaica is a small species, usually not growing much larger than a few inches in length. It features a distinctive pattern of black and brown mottling that resembles a mosaic, which provides excellent camouflage among the riverbed detritus and submerged wood where it naturally resides. This cryptic coloration, along with its elusive behavior, is why it's called the "Ninja" Woodcat.

In terms of aquarium care, the Ninja Woodcat thrives in a tank that provides plenty of hiding places and a soft, sandy substrate. They are nocturnal and are most active during the night, so providing dim lighting or using floating plants to diffuse light can help mimic their natural conditions and encourage more visible activity during daylight hours. Driftwood and leaf litter not only enhance the naturalistic setting but also support a microfauna of beneficial bacteria and small organisms that these catfish may graze on.

Water quality is crucial for maintaining the health of Tatia musaica. The water should be kept clean and well-oxygenated with a gentle flow, mimicking a calm stream environment. Regular water changes are essential to keep the water parameters stable and to remove any pollutants that could stress these sensitive fish.

Diet-wise, the Ninja Woodcat is carnivorous, typically feeding on small invertebrates and insects in the wild. In captivity, their diet should include a variety of live or frozen foods such as bloodworms, brine shrimp, and daphnia. They can also be fed small sinking pellets or granules formulated for carnivorous fish. Due to their shy nature, care should be taken to ensure that food reaches the bottom and that more aggressive feeders do not outcompete them for food.

Breeding Tatia musaica in captivity is rarely reported and can be challenging due to their secretive nature and specific environmental needs. Like many other catfish, they are likely to spawn in secluded locations, and replicating the precise water conditions and seasonal cues that trigger spawning in the wild can be complex.

Overall, the Ninja Woodcat is a compelling species for dedicated aquarists looking for an unusual and attractive addition to their community tanks. Their care requirements and nocturnal habits make them best suited for more experienced fish keepers who can appreciate and accommodate the subtle nuances of keeping such a cryptic species.