L128 Hemiancistrus sp.(Wild Caught) 1.5″-2.5″

The L128 Hemiancistrus sp., commonly known as the Blue Phantom Pleco, is a stunning and popular species in the aquarium hobby due to its beautiful blue or greenish-blue coloration and peaceful temperament. Like other members of the Hemiancistrus genus, L128 prefers strong water flow and is a primarily omnivorous species with a preference for a diet rich in plant matter.

• Appearance:
  • Body: The Blue Phantom Pleco has a streamlined, armored body covered with small, bony plates typical of plecos. It has a large head, round eyes, and a relatively broad mouth designed for grazing on algae and biofilm.
  • Coloration: L128 is known for its striking blue or blue-green coloration, with small lighter blue or white spots scattered across its body and fins. This coloration can vary slightly depending on the individual and its habitat, with some appearing more greenish.
  • Size: It reaches a moderate size, growing up to around 15–18 cm (6–7 inches) when fully mature, making it suitable for medium to large aquariums.
• Habitat: 40 GALLON OR LARGER AQUARIUM
  • Native regions: L128 is found in the upper Orinoco River basin, particularly in Venezuela. It inhabits fast-flowing, rocky riverbeds with high oxygen levels and ample hiding places.
  • Environment: In the wild, Blue Phantom Plecos are used to clear, well-oxygenated waters with strong currents and a rocky substrate, where they can hide among rocks and feed on algae and biofilm.

• Feeding habits: L128 is primarily an omnivore, with a strong inclination toward plant-based foods. In the wild, it feeds on algae, biofilm, and small invertebrates. In captivity, it should be provided with a diet that includes algae wafers, fresh vegetables like zucchini or cucumber, and occasional protein-rich foods such as bloodworms or brine shrimp.
• Temperament: The Blue Phantom Pleco is generally peaceful and can coexist well with other community fish. It is not particularly territorial, though it may show mild aggression toward conspecifics or other plecos over hiding spots. It is more active at night but can also be seen grazing during the day.

• Tank size: A tank of at least 55 gallons is recommended for L128, though larger tanks (75 gallons or more) are ideal for creating a more natural environment and accommodating multiple fish.
• Water conditions: L128 prefers soft to moderately hard water, with a pH range of 6.0–7.5 and a temperature of 24–28°C (75–82°F). It thrives in tanks with strong water flow and good oxygenation, as it mimics the fast-flowing rivers of its natural habitat. A high-quality filtration system is essential to maintain clean water conditions.
• Aquascape: The tank should be designed with plenty of rocks and driftwood to create hiding spots and caves where L128 can feel secure. A smooth, sandy or fine gravel substrate is recommended to avoid damage to their sensitive undersides. Plants can be added for aesthetic purposes, but they are not necessary for the pleco’s health. The main focus should be on replicating their natural environment with rocks and driftwood.
• Diet: In captivity, L128 should be fed a balanced diet of algae wafers, spirulina-based foods, and fresh vegetables like zucchini, cucumber, or spinach. Although plant matter should form the bulk of their diet, occasional protein-based foods like bloodworms, shrimp, or insect larvae can be offered to meet their omnivorous needs.

• Reproduction: Breeding L128 in captivity is rare but not impossible. Like many plecos, they are cave spawners, so providing tight-fitting caves or hollow driftwood can encourage spawning. The male guards the eggs until they hatch, which typically occurs after about a week. Breeding conditions are challenging to replicate in home aquariums, as they require specific water parameters and environmental triggers, such as seasonal changes.

• Tank mates: L128 is peaceful and makes a good addition to a community tank. Suitable tank mates include small to medium-sized South American cichlids (like Geophagus or Apistogramma species), tetras, rasboras, and other non-aggressive fish. Avoid housing them with aggressive or highly territorial species, especially other bottom dwellers that might compete for hiding places.
• Hiding places: L128 requires plenty of hiding spots to feel secure. The tank should have rocks, caves, or driftwood that create shaded areas where they can retreat during the day. This is especially important if you plan to house multiple plecos, as they can be territorial over their hiding spots.

• Water quality: The Blue Phantom Pleco requires clean, well-oxygenated water. Strong filtration and regular water changes are essential to maintain optimal water conditions. The high water flow helps replicate their natural river habitat and keeps them healthy.
• Hiding behavior: L128 can be shy, especially during the day. Providing sufficient hiding spots will help reduce stress and encourage natural behavior. This is especially important if housed in a busy or brightly lit tank.

• Similarities: Like other plecos, L128 has a strong need for hiding spots and prefers a diet rich in plant matter. It also shares the armored body and nocturnal habits of many plecos, being more active in the evening and night.
• Differences: The main feature that sets L128 apart is its striking blue coloration, which distinguishes it from similar species like L200 (Green Phantom Pleco), which has a more greenish coloration. L128 is also relatively peaceful compared to more territorial pleco species, making it a better fit for community tanks.