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Ancistrus sp. L-144a Gold is a sought-after aquarium form of the Gold long-finned bristlenose pleco, also known as Long Fins. Its golden-yellow to cream coloration, combined with enlarged fins, gives it a striking presence in a community aquarium. Like many bristlenose plecos, it feeds mainly on plant matter and biofilm while benefiting from a layout rich in wood, shelters, and grazing surfaces. Peaceful, hardy, and most active around dusk, it suits aquarists looking for a decorative loricariid without predatory behavior. Its rarity level 2 reflects intermediate availability depending on shipments and breeder production.

General description

Ancistrus sp. L-144a Gold is a small loricariid catfish from the bristlenose group, sold under an aquarium strain name rather than as a scientifically described species. It is recognized by its sucker mouth, flattened body, and ability to cling to aquarium surfaces. The Gold form has a pale body, while Long Fins refers to fins that are more developed than those of short-fin forms. Activity usually increases as the aquarium lights dim. It remains peaceful with similarly sized fish, although males may defend a shelter or spawning site. A mature, well-oxygenated, stable aquarium is preferable to a newly established tank. The presence of natural wood and caves is especially useful for comfort, grazing, and natural behavior.

Geographical origin and biotope

The L-144a code belongs to the designation system used in the aquarium trade for commercially available bristlenose plecos, and by itself does not identify a precise country or river. In practice, Ancistrus sp. L-144a Gold is mainly encountered through captive breeding and selective lines, where the Gold color and long fins are maintained. Its aquarium should nevertheless suggest a small South American stream: clean water, strong oxygenation, light to moderate current, and many grazing surfaces. A layout made of roots, smooth rocks, and caves provides suitable shelter. Efficient filtration without excessive turbulence helps maintain stable water. Hardy plants can be used, although the pleco may graze tender growth when plant-based foods are insufficient.

Precise location and local name

Ancistrus sp. L-144a Gold is primarily identified in the aquarium trade by the L-144a code, combined with the Gold and Long Fins descriptions. These terms distinguish an aquarium line or selected form rather than a precise wild population. The most common English name is Gold Longfin Bristlenose Pleco; French-speaking aquarists may also call it an Ancistrus Gold à longues nageoires or Gold Long Fins. The word “bristlenose” remains a practical reference when searching for it through breeders and retailers. Its intermediate availability, corresponding to rarity level 2, can change according to production and shipments.

Appearance and physical characteristics

Ancistrus sp. L-144a Gold has a stout, ventrally flattened body covered with bony plates and a lower mouth adapted for grazing. Its color ranges from golden yellow to cream, with generally dark eyes in this Gold form. The dorsal, caudal, and pectoral fins are extended, creating a more dramatic outline than that of a Short Fin bristlenose. In mature males, the fleshy facial tentacles usually become more developed; females generally have shorter tentacles concentrated around the snout. Adult size usually reaches about 12 to 15 cm, depending on the line and growing conditions. Long fins require a layout without sharp edges and good water quality to reduce tears and secondary infections.

General diet

Ancistrus sp. L-144a Gold should receive a primarily plant-based diet and should not be expected to live only on algae growing in the aquarium. Pleco wafers containing vegetables, slices of zucchini, cucumber, or pumpkin can supplement its menu. Natural wood is also recommended as both decoration and a grazing surface. A small portion of richer food, such as protein-containing wafers or suitable frozen foods, may occasionally be offered, especially to juveniles and breeding adults. Feeding after the lights go out is often effective because the fish becomes more active then. Remove uneaten vegetables to prevent water quality problems. A varied diet supports steady growth and helps maintain its coloration and fin condition.

Essential data

• Native river:
• Local name used: Gold Longfin Bristlenose Pleco
• Origin of the scientific name: Ancistrus is the genus name used for these loricariid catfish; “sp.” indicates that the identification remains at genus level.
• Complete-name etymology: Ancistrus comes from Greek and refers to a hook; sp. means unspecified species; L-144a is an aquarium code; Gold describes the golden color and Long Fins the enlarged fins.
• Common/vernacular names: Gold Long Fins, Gold Longfin Bristlenose Pleco
• Family: Loricariidae
• Subfamily: Hypostominae
• Name pronunciation: an SIS trus - ess pee ell one four four ay
• Discovery:
• Maximum adult size: About 12 to 15 cm
• Water temperature and pH: 24 to 28 °C; pH 6.0 to 7.8
• Stream appearance and surrounding vegetation: Soft, well-oxygenated water with wood, rocks, and shelter; abundant streamside vegetation.
• Typical tankmates: Ancistrus cirrhosus, Brochis splendens, Hyphessobrycon amandae, Paracheirodon axelrodi
• Temperament and behavior: Peaceful, mainly crepuscular and nocturnal; males may show territorial behavior around small caves.
• Water depth:
• Sexual dimorphism: Adult males usually develop more facial tentacles; females have a smoother snout.
• Bottom structure and flow: Sand or fine gravel with wood and smooth rocks; light to moderate flow and strong oxygenation.

In your aquarium

To succeed with Ancistrus sp. L-144a Gold, provide a mature aquarium, stable water, and filtration that maintains strong oxygenation without creating violent flow. Offer several shelters, natural wood, and regular plant-based foods. Pay close attention to water quality and the condition of the long fins, which can be damaged by rough décor. Consistent maintenance, moderate water changes, and feeding after the lights go out will encourage natural behavior. With these conditions, this Gold bristlenose becomes a peaceful and attractive bottom-dweller for a carefully planned community aquarium.