Lda 072a Ancistrus Trirradiatus

Ancistrus triradiatus (LDA 072a) Care Guide

Common Names:

• LDA 072a Pleco

• Three-Rayed Bristlenose Pleco

• Ancistrus triradiatus

Scientific Name: Ancistrus triradiatus
Origin: Colombia – Upper Orinoco and Meta River systems
Size: 4–5 inches (10–13 cm)
Lifespan: 6–10 years
Temperament: Peaceful, territorial toward other bottom dwellers

Tank Setup

• Tank Size: 20 gallons minimum (for a single adult)

• Substrate: Sand or smooth gravel

• Decor:

  • Driftwood (great for grazing and hiding)

  • Caves and crevices (especially for breeding)

  • Rock piles or low shelters

• Plants: Plant-safe; great for planted tanks

• Lighting: Low to moderate—prefers shaded areas

Water Parameters

• Temperature: 74–82°F (23–28°C)

• pH: 6.0–7.5

• Hardness: Soft to moderately hard (3–15 dGH)

• Filtration: Moderate flow, strong biological filtration

• Water Changes: 30–40% weekly

Diet

• Feeding Style: Primarily herbivorous with some omnivory

• Staple Foods:

  • Sinking algae wafers, veggie-based pellets

  • Blanched vegetables (zucchini, spinach, cucumber)

  • Occasional protein (bloodworms, shrimp pellets)

• Feeding Frequency: Once or twice daily

• Note: Provide driftwood for grazing and gut health—even if not required as a primary food source

Behavior & Tankmates

• Activity: Nocturnal or low-light active

• Temperament: Peaceful but may be territorial with other plecos

• Good Tankmates:

  • Tetras, rasboras, Corydoras, dwarf cichlids, gouramis

  • Avoid large, aggressive species or other male bristlenose unless space allows

• Best Kept: Alone or with compatible fish; can be kept in pairs or small groups if space and cover are adequate

Breeding

• Breeding in Captivity: Fairly easy under the right conditions

• Spawning Type: Cave spawner

• Breeding Setup: Provide narrow caves or tubes

• Parental Care: Male guards eggs and fans them

• Fry Feeding: Blanched veggies, powdered algae wafers, baby brine shrimp

Care Tips

• Provide hiding spaces for each pleco if keeping multiples

• Avoid sharp substrate to protect their soft underbellies

• Driftwood adds natural grazing surfaces and tannins for health

• Keep the tank well-maintained and oxygenated—stable water is key