Ancistrus Dolichopterus

Datasheet

General Description

The Starlight Ancistrus, scientifically known as Ancistrus Dolichopterus, is a member of the Loricariidae family within the Siluriformes order. Adult specimens can grow up to 20.0cm in size and are distinguished by possessing nine soft dorsal-fin rays, a characteristic that sets them apart from other members of the Ancistrus genus. They are native to flowing streams and tributaries with acidic black water, typically found in regions ranging from Panama to the Río de la Plata drainage in Argentina.

Aquarium Setup

To house the Starlight Ancistrus successfully in captivity, a tank size of at least 270 litres is recommended. Creating an environment that mimics a jungle stream is ideal, with a substrate of sand, driftwood roots, and branches for hiding spots. Adequate lighting, unless for plant growth, and the addition of dried leaf litter for cover contribute to the species' well-being. It is crucial to maintain pristine water conditions and avoid the accumulation of organic waste for the Starlight Ancistrus to thrive.

Behaviour

Known to be relatively peaceful, the Starlight Ancistrus can exhibit territorial behavior towards conspecifics and species that are similar in shape. Their nature as territorial but peaceful creatures makes them an interesting addition to community aquariums with proper planning.

Feeding and Diet

In the wild, Starlight Ancistrus are likely omnivorous foragers with a preference for aquatic invertebrates. In the aquarium, they thrive on a varied diet that includes sinking dried foods, frozen options like Daphnia and bloodworms, as well as fresh vegetables and fruits. Homemade gelatin-bound foods enriched with natural ingredients provide essential nutrients and can be tailored to meet their dietary needs.

Reproduction & Dimorphism

Starlight Ancistrus are cave spawners, with the male fish taking on the responsibility of brood care. Sexual dimorphism is evident in adults, with males possessing well-developed odontodes on the pectoral fins and opercle, as well as tentacles on the head, features absent in females.

Habitat and Distribution

In the wild, the Starlight Ancistrus prefers habitats of flowing streams and tributaries with acidic black water, reflecting their natural environment across regions from Panama to Argentina. Although distribution reports vary, the species is commonly believed to be endemic to the middle and lower Rio Negro in Amazonas State, Brazil, with confusion arising from historical misidentifications and lack of precise data regarding its habitat boundaries.